Edelbrock Rpm heads on 360

What furry said
which hyper piston
what's your compression height and deck clearance
if 0.0 deck with a FT use the .040 fel pro
if down the hole .010 use the .028 gasket
if down more than .010 you got work to do
stock rockers should be fine- if you go roller tips you have to shim/ relocate the shafts PITA but necessary (a hidden cost to roller rockers)
did you say what cam?
if you do not have it apart yet do a compression check first and report