Building Bad A$$ 3.8 buggy need auto tranny help

[mitchd43]

I am building a big 2 seat long travel dune buggy with a supercharged 3.8. 

I need to run an automatic. 

I heard the 010 transaxles would do the job. I have also read about the audi 5000 turbos using the same tranny but with better internals. 

My question is what transaxle would I be needing for a 1200lb 260hp buggy? 

Would a stock vanagon be good? A stock audi 5000 turbo? I imagine if it can pull around a heavy bus it should pull a light buggy around no problem. 


Thanks for any help 

Mitch