I had a problem with the AA adapter to the A440f, the flex plate was too far away from the trans and needed spacers between the flexplate and torque converter. Ive had more problems with AA then success now that I think of it.
A chevy NV4500, or maybe NV3500 adapted to the toyota t-case might be a nice alternative to the AA adapter in hindsight, plus you get the benefits or disadvantages of a manual trans depending on how you look at it.
That sounds familiar, its been probably over a decade since I put it in, but after assembling everything the vehicle wouldn't move, having the torque converter not fully in was like having the t-case in neutral, none of the gears did anything, had a mechanic sort it out, it cost a few bucks.. When he figured it out essentially he added washers between the flexplate and torque converter and then it worked. The sad part was that I trusted AA to make a functional adapter and had to get it towed and spend more money for someone to trouble shoot it.I did notice when I looked up the adapters they looked kind of goofy. From what I understand it uses a manual flywheel a spacer and then bolts the flex plate to the end of that. Is that correct?
I switched from TBI to FiTech. Better mileage, better driveability, and tons more power .... but Steve is right, you're replacing the entire fuel system to go from TBI to any new EFI.... it's something to really consider when you're starting, I easily have the cost of the FiTech in the Howell's TBI system....that was my plan too, but the newer systems need different pumps and maybe different plumbing. Cheaper to do it up front.
That drivetrain is pretty long. I would measure from the crank pulley to the rear output of both the stock drivetrain and your proposed.Have my drivetrain figured out. My buddy has a turbo 350 attached to a 203. I have a 205. So th350 with a 203 205 doubler. Gives me 3 speeds with a 4 to 1 low