more then likely you have an advance adapter between the two http://www.chassisunlimited.com/advance-adapters-ford-c4-3-speed-automatic-transmssion-to-toyota-truck-gear-driven-transfer-case-with-23-spline-input-shaft-adapter-kit.html

Thanks dude!  Yes, that's the adapter we have.  We got everything mated up on Friday then installed the motor (351W), Trans (C4), Marlin Crawler and Dana 20 all together as 1 piece today...  What a pain in the butt - even with the grill and core support removed.

Then found out we need a body lift because we cant get the tail end up high enough... D'oh!

Do you know if any fluids are needed in the adapter you linked to?  I figured it was just a tailshaft adapter, but after seeing it has bearings and a spline converter, i'm not 100% sure.

Thank you very much for your guidance.
12'r