I'm spending my $$$ on a new front axle so for the moment I'm doing a low budget NP231 SYE instead of an Atlas. I machined the case and got a Currie companion flange. Thats all done. My question is.....I want to hack a front driveshaft and lengthen the body and use it on the rear. I have everything except the part that adapts the companion flange to the dual cardan joint. Anybody ever done that and have a part number? Spicer's catalogs are a bit confusing on what will work with what. The hole pattern on the companion flange is 4 on 3.5" bolt circle.