I may drive a GTO but my rear end is a 8.8 out of a Termi. It was originally built for a turbo car and they went with 3.27 gears. I'm running a Magnacharger and just wondering how much faster you Termi guys went with a gear swap. I'm leaning toward 3.73s as 4.10s would take me out of 4th gear in the quater. My set up right now is stock long block, blower @ 6 psi, and headers. I've driven to a best of [email protected] Thanks for the help.