Hello to you all, this is my first post. I was going to do a search on this subject but couldn't find a way to do so...so hear it goes. I have a '90 GT with a mildly modified 306 with Edelbrock Performer RPM alum. heads (#6025 with 2.02/1.60 valves)) with a Performer RPM 2 manifold, B303 cam &...