Couple of simple questions. Does it have bellhousing mounts? Or does it have a ****** mount? Sounds like with the 5-1/8 hole it is truck . I would put a 55-61 car bellhousing on it with a muncie or borg warner ! What exactly do you want? Looks like you have a nice truck there!......Don"t feel bad I just did a friends 1965 G.M.C. pickup 350 saginaw 4 speed. 3 ******s in 1 year all saginaws. The last one I built lasted 10 days...What can I say????