x heads on a 360??

Yeah, I know. Have been thinking about that. Have a buddy that is a mechanic that had a machine shop and still does stuff on the side. I can probably get them done cheaper than most. Only problem is, he's a chevy guy and a damned good one. Done mostly bowtie stuff. Anything different on Mopars?? Shouldn't be much different doing valve guides and seats should it? Valve job is a valve job, right??