i gained 12 horse on the motor dyno with a 4 hole super sucker. there have been gains higherm dominator car guys have gained as much as 47 horse, there is an article on their page.
http://www.cfm-tech.com/HVHdominator...dynotest-1.htm
http://www.cfm-tech.com/catalog/_ss4...rbs_769168.htm
thats the one i have, every combo is different so every one gains diffrent #'s
http://www.cfm-tech.com/catalog/_ss4...rbs_769168.htm
there it is agin, i tried and it didnt come up when i hit the link. its a 4 hole 1 inch aluminum spacer. they also work with NX express and make their nitrous plates