Yes, it self aligns on the input lip. There are mechanical bell housings for non-SM465 transmissions that will fit in every regard except for having a smaller diameter input lip. The SM465 and NV4500 share the same lip diameter, so it's pretty easy mounting it up. The one bolt that's further from center was close to overlapping with the NV4500 bolt pattern. I remember rotating my bell housing a tiny bit from vertical to gain some clearance there. I based my work on some pictures that Martin dug up of someone else doing the same. Those pictures are either in the M1009 thread or in my NV4500 tech thread (I gathered ideas for a while before going ahead with this one).
Clutch-wise, I haven't installed the hydraulics yet, so it hasn't been tested. But that will probably be done soon, stay tuned over there for updates. I used a newer take-out clutch from one of the members here. Supposedly came off of a 6.5, I bought the flywheel and clutch set together. It is 12" diameter LUK clutch with 2 sets of springs. Don't remember the P/N, but it's the same dimensional size as the standard clutch for a 1986 6.2 pickup.
