Ya I've seen a few posts by you saying that you wish you had gotten 4.10s and its one of the things that made me decide to go with 4.10s in my car. The S/C I plan to get is going to be a Centrifugal type, so I want the 4.10s to make up for the lack of immediate boost down low in my first gears. Also, I dont think it will be a problem with topping out 4th at all. Theres a guy over on MPH forums and he is running 11.4's @ 120ish mph with vortech s/c kit, 4.10s, stock shortblock, tires, and suspension. I dont plan on building the block and going for more power for quite some time, so I think I'll be ok with the 4.10s for now. Maybe later on down the road (years and years) when I do finally get a forged shortblock I'll go back down to 3.73 or something. But for the current time, I want 4.10s, especially since its gunna take me a while to get the money for the S/C and I want to have the pull of 4.10s in the mean time. lol I'll go heck out the SCT chip thing nanaki, I was just planning on getting the speedcal from mustangtuning.