[Bearhawke]

Sorry for the very late reply here.

Try the Jalopy Journal. I thought that Butch's Cool Stuff would have the V8 conversion mounts but; there's a gap in the coverage which leaves out 1953-54 Mopars.

 

[dana44]

Dropping a body onto a full chassis is probably more work than the motor swap itself. Start with the engine/trans in the 54 first, steering is not that difficult, especially if you swap the rack and pinion in from the Dakota, a couple steering joints will work around the rest of the engine/exhaust, this has been done before. Pretty sure Mopar Muscle has done this swap, and I think a few years back Street Rodding/Rodder did a similar swap, so there is some information out there, just have to do some searches.