I have a friend planning a 454 swap for his dad's Vortec 350 truck. If he does I want to try and get his Vortec heads off of him. Anyone running a set of stock Vortecs on a TBI motor? Wondering about the performance gains. Was thinking of using the Vortec heads and an Edelbrock RPM air gap manifold with throttle body adaptor plate instead of one of those TBI Vortec intakes.