I am looking at the manual conversion for mine. It comes in 5 speed and I guess a 6 speed is either available or almost available. I was going to post this question as well.
It really depends on what you plan to do with the car. I'm not sure I would use a TKO based tranny for drag racing, the 2-3 shift can be a bit of a bummer, although there are a couple of fixes for that. The T-56 is a big trans in relation to what originally came in our cars. Some cutting is required.
I strongly suggest contacting the supplier and talking to them directly to find your own understanding and comfort level on what is required for any conversion. If you can, get copies of the install manual and talk to as many folks who have done what you are thinking about doing.
