whats better ? i know my 01 cougar that i had before was returnless im assumming my 98 SVT is return style. is there any performance difference. i think i read somewhere its easier to get a n02 system for return style.

FORSALE - 17" FSVT Wheels, TRubendz catback w/magnaflow muffler PM ME 02 celica GT-S 6-spd w/ TRD bodykit Greddy evoII exhaust, DC sports header Injen Short ram intake, TWM short throw shifter, 18"centerline storm wheels, Tein basic coilovers