I bought my LHD/German 911T in 1988. It was an awful car, and needed everything.
I finished the car in lhd form in late 1989/1990 and drove it for 3 years before converting it to RHD using some original dash panels, DIY bulkhead panel cuts, RHD pedals etc. Extended the loom and so on.
Then, the car was worth in LHD form about £3500.
I converted it (2 weeks part time effort over a Xmas period) because the wife hated having to call if we could overtake or not. LHD is no bother to me having worked in USA/Europe for many years.
Biggest issue was getting a second hand dash top, but one came from a race car.
At the time, Club Autosport did a lot of conversions, but I've never seen one, but the cuts were harsh I'm told, and steering wheels were very close to the dash top.
My 911 changed rapidly over the years and 34 years on still have it, drives great and only a DDK'r would spot the conversion.
3 years ago I repainted the car and had cause to get close to all that conversion work, all safe and sound.
If your car is a keeper, than just leave it alone.
To do the reverse change the real panels you would need are only 3, the bulkhead panel would take some getting out if splitting factory welds.
Pic below is during the re build after the respray.
You can see the brake reservoir move, the retention of the smugglers box lid (no box underneath).
