I am looking at rpms kit with the 60-1 or the t66. which is the better turbo? i only want to deal with rpm. I have seen there work in person and its perfect. i also live about 45 minutes from them so that aslo makes it better. i am looking for a strong 11 sec truck with proted vortecs and rpms a2a kit as well. i would like to hear from some people that have ethier kit and tell me how they like it. also do i have to do any mods to the ac braket for clearance?