The problem with nitros is not about anything but how fast you can x-ost it. If you can´t x-ost fast enough you´ll blow your engine. Free flow x-ost catback, cat and good manifold is not enough. You´ll need to really work on your canshaft part. Highlift camshaft, lifters, dual springs, light rocker arms. Sometimes you´ll need to port and polish to put bigger valves. Other thing is tranny. You´ll nave to make it stronger to handle 100 shot. Also your injectors are they capable to supply enough fuel for that amount of nitros.