Hey KenParker,
You didn't say what kind of truck.
I'm doing the same thing with a 48 2 ton, but using the original low pressure 235. You are 1 step ahead.
I chose a 700 R4, strong tranny with over drive, mechanical control, no computer needed.
The problem is - if you choose a modern, drivable automatic, all of the adapter kits require a 12V starter. I liked Langdons best.
If the truck is going 12V no problem, if you want to stay 6V you are going to use something vintage.
