So I hit my first snag; this image will help explain what I'm running into.
Basically the unsplined portion of the input shaft (where the input shaft to crankshaft bushing would go) is too long.
I currently have an adapter plate that is 3/8" thick, and after doing some measuring the input shaft is about 3/8" too long as it hits the "bottom" of the crankshaft.
I can remake the adapter plate using 3/4" thick material, but the problem is then the splined part of the shaft would be making very little, if any contact with the clutch disc closest to the engine. (Figure 1 of the image above)
So I'm thinking my 2 options are:
1. Leave the adapter plate alone and have the input shaft shortened ~1/2" (leaving 1.125" of the unsplined part)
2. Leave the transmission alone, use a thicker adapter plate, and a thicker flywheel (about 5/8" thicker) to move the clutch discs away from the engine. (Figure 2 on the above image)
I'm leaning toward #2 right now, if it is possible, I've sent a message to Clutchmasters to find out...