Im new to the forum, but not the cummins. I have a 1990 Dodge cummins single cab 4X4 automatic. I was wondering what I could do to make it a little pepier? I would like to smoke my friends duramax, but I imagine to do that I would have to change to the p pump. My dodge is stock except for the fuel screw being turned in a little. I have read on here about a different fuel pin? Is that the same as the fuel screw? If so where can I get one? By the way, it's non intercooled, and it wont be used for towing. What turbos are recomended? What about the hx-40? What size injectors are available. I want to make a sleeper out of my farm truck. Any input would be greatly appreciated. Thanks