Edelbrock Rpm heads on 360

Compression, You are going from a open chamber head to a closed chamber. You will want to measure compression ratio. How far are the pistons in the hole, flat tops? Also what do you have for exhaust manifolds. An A body stock 340 exhaust manifold style can hit the eddy head on the drivers side. Not sure what your ute has. Also alternator can hit the head. Not insurmoutable issues just things to keep in mind. Also they take a different head bolt/stud kit.