Ok Tony and norm, here is a question for you. You both have different set ups. I know I have to change my springs because I have SS springs and you can not use the with cal-trac. I am pushing about 650 hp to 700 hp. My question is what system would be better? for the hp I have and I plan on getting more hp out of her.I know Cal-trac sells a complet system. I really dont want to switch to a 4 link. :scratch: :-k