So this morning I pulled the trigger and ordered up this
Column linkage to attach the th400
Crossmember to attache the th400 into the car only problem is they are out of stock and wont have it back in stock until latter this week which means it wont ship out until friday..... I hope (fingers crossed)
and a th400 yoke that accepts the 1310 u joint, which is the stock style for my driveshaft. And from the looks of the pictures they have I believe It will also fit on the truck style output shaft because it is machined to have a few inches of splines out to fit over the truck style o-ring.
Also changed the weights and springs out in my distributor today, and picked up output, input seals, and a transmission pan gasket and filter.
Father-in-law has a th400 transmission case that's in his barn that was left there when he bought his place. Gonna snag that from him tomorrow and that way I can mock up the transmission into the tunnel and see where I need to massage it for clearance. Once that's done Im going to install my transmission and pull my measurement for my driveshaft and drop it off on Tuesday to have it shortened and then install that.
Hope they ship this shit out like asap. I really like the people @ chevy2only.com, but they are in Kentucky and I dont know if life moves at a slower pace there but it seems like everything I order from them takes 2 weeks to get here.