For what it is worth. I am running the 11R190 heads, RPM airgap intake, with Fitech 30004. Mine is on a Dart block, 363 ci. I have driven it several times, not license yet, but it is really strong setup. In fact, if I had it to do over I probably would have gone the route you are going or perhaps 331. I am not sure if I will ever tap into the full power of my setup. The 11r190 heads, in my opinion are a work of art. I love my fitech, it starts right up hot or cold like a modern FI engine. Hope this helps...