Excuse posting on Impact bumpers as well but this relates to both early and later case. Basically I've fitted Elephant Racing Monoballs at the front, so thought I'd post my experiences to help anyone else trying the same. This time I'll do pictures - as Telly Savalas said 'if a picture paints a thousand words then why can't I paint you'. Whatever.
Had a real saga getting the things - ordered them over here and had problems and eventually got a refund. Ordered them direct off Chuck in the end, along with some other goodies. I know Kroggers does them as well.
JG actually recommended I fit them after test driving my car - would have made a nice Christmas present to myself - as it happens it's ended up as part of my birthday present.
OK here's the suspension top before we start
The top of the shock absorber sits in a thick rubber bushing. The thinking behind the monoballs is that on harder cornering the top of the shock compresses the bushing and moves. The monoball takes this movement out which should help with cornering
Here's the beauties, waiting to be fitted:-
Mmmmmm, Monoballs....
First remove the nut, washer and disc from the top of the shocker
Then compress the shock and move it to one side - I actually hit it with a plastic hammer from the top and then managed to pull it down from inside the wheel arch. In the manual is says you probably won't have to remove the wheel but I can't see how you can do this without removing it.
The next stage is to get rid of the rubber (and metal collet in the middle of it) - it just says to cut this across the top with a stanley knife. I started doing this and found it hard, so then went to using a baby hacksaw. Eventually I realised I was just being wimpy and the stanley knife worked fine - repeated cuts worked well.
Once I cut about half of it away, one good smack with a hammer (one of those rubber shot-filled ones) and it fell through the hole, leaving this:-
I used a bit of wire wool to remove the worst of the scoring.
I then fitted the monoball - you put the main body through from underneath and then screw in from the top. This is what it looks like underneath:-
That's when the problems started.....
It says the nuts need tightening to 60lb ft torque. At this stage you need to reach into your toolbox and pull out your 1 & 7/8 inch socket. No, not the normal one - a special narrow-walled one. What do you mean you haven't got a socket that big - what kind of man are you anyway? The socket required is huge. I couldn't find one at Halfords, and eventually decided to just use a pipe wrench and mole-grips. The nut actually has a split pin holding it in place as well so as long as I could get it tight I wasn't too worried about not getting the exact torque right.
So now I've decided how to tighten it up it should be easy right? Not on your nelly (I've wanted to write that for ages). Getting at the top nut is OK - although it's close to the inner wing and I also had to disconnect the suspension bar thing (completely forgotten what they're called at the moment) to get better access.
It's the bottom nut that's the problem. The nut fits tight inside the metal thing (for want of a better description I'll refer to this as the metal doughnut) - there's so little room in there that you can't get much at it. I definitely couldn't get any tool at it with it sat in the car so out it came, and onto the bench (I carefully marked the position of the plate before moving it so as not to disturb the suspension settings)
I tried getting a mole wrench to grip on the flats but each time I came close the walls of the doughnut forced it off. Eventually inspiration struck and I ground back the mole wrench, to remove some of the material on the back and also put an angle on the jaws - like this:-

This mean it slipped inside the flats and when closed up it gripped it well enough. With the mole wrench clamped on, and the wrench itself gripped in the vice, I was able to get a good bit of force using the pipe wrench on the top nut.
It all went back together smooth enough, and I fitted the split pin. I then went onto the other side. I was hoping that my 'special' Mole wrench would allow me to fix it all in situ like this:-

But no - it kept slipped off.
Decided to remove the plate on that side as well - but the bolts were much too tight and one had seized - eventually it just ended up turning the captive nut round and round. Bummer!
Having got the nut fairly tight I decided to put it all together again on the basis that I would take that captive nut off tomorrow and finish the job off properly.
So that's my job for tomorrow morning.
Driving Impressions
I can feel the difference but it's quite subtle in day to day driving. Those first few degrees that you move seem to have sharpened up a bit, and that's a nice feeling. I took a tight corner quite vigorously on Sunday though and then I did notice a substantial difference - the front end kept on gripping - normally it would wash wide a bit - the extra grip at the front seemed to help the back move out a bit - in a controllable way.
As I've driven it more I'm enjoying it more. It's not a night and day feeling (apart from that fast tight corner) but there is a nice difference that I can feel.
Hope this helps
Cheers
Mark