Converter Quiz
Use a B@M flexplate and bring it and the balancer to the machine shop. Have them bolt them up to the crank when they balance up the crank and rods. Then just use nuetral balanced converter.
You'll want a 3500 rpm converter for it. I think a "loose" 10" Turbo Action converter will work good with that combo.
I'm running a tight 8" T/A converter in my car. It flashes to 4000 rpms and has good street manners.