Dave,
Let me know how the Dyno tests come out. I also would like to know if an adjustable fuel pressure regulator would offer any additional performance gains with the SC. I did change the pulley on VX to the 5 PSI about 1-1/2 weeks ago and did see a noticable increase in power and response, particularly in the upper RPM range. Of course, more is better!! Let me know what you find out on the Dyno. Also, let me know what kind of regulator you end up using if it does make a difference. VXtreme (Bob)