As much as it dulls the appeal for me swapping to chevy power, I can't think of a single LOGICAL reason not to do it. Parts O plenty, less cost, and often more power. Hell, if you buy used chevy stuff it's usually 8 cents on the dollar too. Good luck finding something good used in a mope.
Need a chevy block, you have 10 or more choices new, on shelf, same day, and countless used ones.
Hey I need a Mopar block,,,and a time machine.
This is very true, plus a gazillion already well sorted combo's.
But, to me it's taking the easy route. I would rather walk the road less travelled but man, that road sure has a lot of stones.