Not trying to rain on your parade but a couple of thoughts:

1) I'd really consider selling this car and getting a nice auto trans car. The manual trans cars have value and the auto cars are more common and therefore cheaper if you can find a nice one (they're out there).

2) If you REALLY want to do this swap I'd consider a conversion plate and one of the GM overdrive automatics. They're tough and plentiful and the adaptors are readily available. If I hadn't found my 4 speed that's what I was going to do with the race truck. There are also driveshaft adaptors to get you to a conventional (well, in the US anyhow) U-joint and slip yoke driveshaft - then any local driveshaft shop can build you a shaft. I used the Jags That Run adaptor plate and I think my shaft was $400, +/-. Works great.

Just some ideas

Dan