Hello. I have several Dodge's, that include a 63 d100 413/727 (project) a 1971 d100 show truck, and a 1972 dodge motorhome. What I am having problems with is a duster that is for sale near me/to me. The guy says its a 71(IIRC) factory 340. Its rough, no motor, who knows about tranny(it is an...