take jass advise... get the SCT. I used to have banks but it died. So i went with the SCT with custom tunes from innovative, taking his advice. I will warn you though, i blew head gaskets and installed studs. Any extra power with these motors I am a firm believer in doing the head studs. Heck i would probably do them on a stocker. The SCT tunes the tranny and has the some of the best power as long as you get the custom tunes. ps I started out with the banks big hoss bundle. so it had everything banks made at the time. the sct is night and day difference from the six gun, especially when it comes to the tranny.