All I have is hearsay so I can't down these guy but the local opinion in N.M. is the H.P turbo kits rock IF you let them do the install. Otherwise they will take forever to get you the kit and then it will be missing components. I know their twin setup for the 3V has been coming soon for the last 2 years now. But I can't down them as they make an awesome kit for the Terminators, and the 3V kit seems alright too.