[Mustang_GT_90]

When we took mine off here's what we did. I took the smog off and I run a 69.5 inch belt because I also run a manual steering rack. The one you'll need will be around 85 inches or something like that. Then you'll need some kind of aftermarket H or X pipe, you don't want to do this mod if you still have cats because all it's going to result in is clogging the cats. After that you'll plug the tub in the h/x pipe. I'm like somebody else on this thread I have a mac prochamber and we just crimped the tube on the prochamber closed and hit it with a welder. After that you'll probably want to/need to get rid of the smog hoses. The easy way to do this is take them loose and then pull the little things off the back of the heads. They are little plates where the smog tube goes in. You'll take that and cut the metal tubes off of them with a hax saw, then switch them from side to side, left goes and right and vise versa, that makes it actually block off the port in the head like a metal stopper.
You're not gonna really see a power increase from this mod unless your pump is toast, you'll get an increase from the H or X pipe. The main reason I wanted to do it was to make it easier to work on the motor and get rid of the extra weight off the front of the car for weight transfer.
Overall the job took like 4 hours to put a set of equal length shorties, MAC Pro Chamber, and kill the smog pump and all the smog hoses. My friend that did it is a pro at this though and has done it to dozens of cars.