Who's put a hellcat in an A-body ??

the issues that will absolutely need addressed is...

steering column,
pass side inner fender for header and valve cover bolts(its tight),
alternator clearences
oil pan clearence and leakage from pan carefully installed before dropped into car,
transmission mount,
starter placement and clearence on block if driver side mounted

those are the big items. there are other little things that can be dealt with later on. like rad support and fans,wiring, battery location etc..