I know...we used to holiday there a lot when we were kids and our parents always told us horror stories about people getting stuck in the sand and then getting sucked down....just before the tidal bore comes up the channel....
I can highly recommend Nick at Redtek. He built a 2.3 litre motor for my 2.2S, with a spec identical to the cars that raced at Le Mans in 1970. He was brilliant in researching it and making sure everything was period correct and that it all worked as a combination.
As to the cost of a rebuild it depends on what you're doing, what needs repairing and who's doing it. For instance the pistons and barrels on my car were shot - a replacement set were going to cost me north of £1,500 so I opted for a set of 1mm larger J&E's to give me the 2.3 litre capacity, which cost £600! A standard rebuild with just consumables (bearings, etc) seems to be about £5k, all the way up from there.... I won't quote what Banshee cost me for the engine, suffice to say I could've bought a good 911T for the same money. Having said that, there is no price to be put on Banshee at 8,000rpm on open megaphones. I must get more technically literate and put it on you tube or something.
cheers,
Steve
'53 356 Pre-A (a box of bits!)
'54 Okrasa/Porsche/VW special
'58 356A Super (GS-spec)
'65 Razoredge Ghia
'66 Westfalia Camper
'70 911S (2.3 ST Le-Mans spec engine)
I hear MotorMeister across the pound does a fab job. And Bob's Your Uncle
Early 911S Registry #750
1970 911E - The Good Stuff
2003 Boxster Tiptronic - Everyday Driver
2001 Toyota Landcruiser - Wife's Tank
2007 Mercedes Benz - Newest Addition
after that. Just do a search on Pelican.