Ok. Heres the lowdown. 2001 zx3 auto. No mods except drop in k-n, and superchip. I wanna either go full race header, flex pipe, and full 2.25 tubing out. Is there any downsides to this setup (other than not being emisions legal and loud). Or would a shorty header, catbypass, flex, and so on be the better way with this. Also, recomendations on brands of equipment to use would help. I was thinking FC for the header, and flex, probally Yo-dude for the catback.