72 c-10 long bed 350 to 454 swap ???'s

[TIMAR]

Doing a frame-up on my 72 Cheyenne. 350 in it is not numbers matching so looking at some other options. Found a 454-700R4 combo complete to drop in at a reasonible price. ?'s are, other than engine mounts and a 4-row radiator, what else needs attention? Currently in process of replacing all steering and suspension bushings. Was going with a 1-3 drop to level it out, but was wondering if the added weight of the 454 if I should use stock fronts with the 3" drop rears.