ok have 75 C20, it is TH350 factory, two piece driveshaft. i am looking t put a 465 trans in it.. as i hate autos and want need 4 speed badly, miss it alot. can i simply swap front half of driveshaft out for a 4 speed one? from what i cant tell i need somewhere around 36 or 38 inches length from the output yoke of the 465 trans back to the carrier bearing. does anyone have a 2wd 4 speed truck can measure see if this is right? i still trying to find a 4 speed trans and mech clutch linkage partsi dont want hydraulic 84-up) and pedal and column and floor tunnel pan etc so i can do this.... for two years now.. nothing exists here in central IL..