There are people that have ran their GT's to 12's with just 4.30's, a DR, shifter, o/r midpipe and SFC's. Your data is so flawed it's not even funny. You refuse to listen and learn from people like us that go to the track and see this day in and day out. Not to mention alot more experience doing it. Also better mpg as you are using 4th and 5th more and dont need to use the lower gears as much. The engine is revving a little more but nothing that is to worry about. Hell these engines make power to 6k and you will be using 5th gear around 1500-2000 rpm city driving. BTW most gear installs gor from 175-200 for labor. Ok now you can shut up. Here is a question on MD to Bill Putnam. http://askbill.modulardepot.com/view.php?viewid=91 And again from Bill Putnam's site of his car(widely known and well respected in the modular community) who used to race the FFW circuit he went from 3.27's to 4.10's(look below as you can verify the mods) September 29, 2000. Best of 13.46 @ 99.63 with a 1.90 60 foot. Mods: Rear Seat Delete, Race Seats, K&N, MAC Off road H pipe and Two Chamber Flowmasters, Removed front sway bar, Pulleys, Nitto DR's, Weld Pro Stars. January 10, 2001. 4.10 gears were installed as well. Best ET with current set up was a 13.19 @ 103.86 with a 1.82 60 foot time. Mods: Rear Seat Delete, Race Seats, K&N, MAC Offroad H pipe and Two Chamber Flowmasters, Removed front sway bar, Steeda Pulleys, Nitto DR's, Weld Pro Stars, FRPP 4.10's. Try and argue with that!!! How about you take you butt to the track and see for yourself. Too many people with the experience have told you, you are wrong and you still refuse to learn.