1970 c-bodies could be had 350-375-390 hp
1970 e-bodies could be had 375-390 hp

motor mounts are the same

RH exhaust manifold is the same on 375-390 hp engines (others are different)

"187" c-body oil pan will fit in an e-body, "HEMI" pan from a 440 e-body will not fit in a c-body