The intake ports will be the cathedral type ports on mine. I've seen too much bad stuff about the sheetmetal ebay manifolds and having them flex like soda cans. Which is funny because the holley sniper/FI tech's are identical to the ebay manifolds, but haven't heard bad things about them. Although I do plan on picking up a set of the holley rebuilt 75lb injectors for $175. That should be more than enough injector for me and this stock motor. All the research I've done and experience I've gained with other people, the 5.3's are the better options for stock block boosted motors.