I'll be sure and post how much this new one is going to cost once all the stuff gets here. Especially in light of the $1.25 Ebay cylinder heads. :bananaman
I rode in a buddy's car before and after he switched from a dual 4V(480's) setup to a 650 Holley Vac. with an Edelbrock RPM Air Gap. No other change. The single 4V with the Air Gap made a world of difference from a dead stop all the way through the redline of about 6200. I have a Edelbrock Performer 289 intake. IF I ever change it would be to an Air Gap intake. Seth