Were you in Tahoe some months back, I think some friends and I talked to you while getting gas? I have the yellow 99 GT Vert with the rediculous SLP exhaust if you remember haha.
I dont think an x pipe would work on a hellion turbo kit, simply because its a single turbo and uses a Y pipe instead of an X or H. If you had gone with a twin seput than an x pipe could be used.