I currently have a 98 cobra. I have a vortech s trim running 10lbs of boost. I have the 3.33" pulley which is the 8lb pulley but with my anderson racing powerpipe I am pulling in 2 more lbs of boost. I also have Nitto drag radials, 36lb injectors, plugs, wires, 4.10s, pro 5.0 shifter and pro m mass air but thats about it. I am running the 1/4 in 12.68 at 115. My problem for the most part is traction, the nittos arent hooking up for me so i m thinking of dropping my launch from 3500 to 3000-3200. My 60 ft times are usually 2.1-2.2 so they suck. Reaction times are usually in the .700's. I am probably going to get the 3.12 pulley and see if it will give me 12lbs of boost and a guy told me he shifts his supecharged 98 cobra at 6500rpm but he has an intercooler. I am a bit afraid of the 6500rpm mark especially non intercooled. I got my 12.68 by shifting at 5800rpm. If you have any comments I would like to hear them. thanks. Trying to run 11's with the drag radials......would like to buy slicks this spring but want the 11's on d/r's first.