Larger fuel pump & Fuel lines, Higher compression, and change any o-rings (carb) to viton. If it's carb'd you will need it gone through, to flow the meth. It's a pain in the ass!!! Every time you plan on having the vehicle down for a few day's, the fuel system needs to be either drained or purged with gas. Anything aluminum or zinc get's eaten if you don't. I did it for several years with the sprint car.