AMS has this part because it was for their 700+whp drag car. That's how the SR-Z32 kit came into existence at Mazworx. Necessity, then making a product out of it. AMS didn't make this part, then throw a 1970 Fairlane junkyard tranny behind it to go drag racing. It was probably a highly built unit.

That C4 adapter is just the plate. Sold separately is the crossmember. Then you need a custom driveshaft. A rebuilt/upgraded C4 as well. $1700 (for a Z32 setup) will be a steal once you assemble your C4 kit.

Maz can get/make you a Geforce2000 adapter....