I had a friend tell me these heads will not mate to this block, well they will bolt together fine but will cause overheating because he says the heads are reverse flow heads and the block is not...any insight on this? Will they pair or will I have overheating issues?

Engine info: Engine Block VIN: 14016379 Small Block V8 1977-1979 350, 2 bolt or 4 bolt

Heads info: Cylinder Heads VIN: 14101083 – 1987 350, crate engines, 285hp or 300 hp, 64cc chambers, 72 degree center manifold bolt angles