I have an 41 1-1/2 ton with knocking smoking original engine, but otherwise in running condition.I also own a terminally rusted 70 Chevy with a 292 6 cylinder and 4 spd.I want to swap in the 292, besides fabricating a mount for the floor pedals, adapting the driveshaft to the newer trans,what other pitfalls can I expect? It appears the present crossmenber supporting the bellhousing will have to be modified or removed,anything else?