I have a fifth generation with a 1972 454 in it with a turbo 400. I'm thinking about upgrading the engine with a edelbrock top end kit # 2095. It comes with the aluminum heads and intake and a flat tappet cam, with lifters and hardware. It does not come with push rods and rockers? My question is do I go with new stock push rods and rockers or do I need something else. There isn't enough room for roller rockers. And what else will I need?