I can tell you from my experiences building this RX-7/GN Motored car, the last thought on my mind is what kind of boost controller I will use. Concentrate on getting the car to run the way it was intended, and then go from there. The stock boost control system isn't that bad, and if you want to mix it up just get a mechanical bleeder valve to start out with. I am a believer in keeping things close to how they were origianlly designed. Why not use the TTA heads (which are a dime a donzen) and get some TTA headers (which are not).