Does the '83 frame support a 351M? Just wondering if a m could replace a w if the w has a c-6 and my m has it's own c-6 and i have motor mounts. I'm not sure when ford went away from the m in the bronco and when they changed the frame holes. Thanks

 

Early 80's Broncos were available with the 351m, so someone should have motor mounts and towers for it. A junkyard would be your best bet, probably.

 

thats what i was hoping and thinking- should be a easy swap since i have my own tranny.