These mods will really wake up your 03 cobra. They respond a lot better to mods than the GT cuz they are supercharged and have the 4v dohc, so your gonna be in good shape. You will probably make around 420-450rwhp on a dyno. Since your changing your pulley, make sure ya get a good tune.
__________________ -04 Mustang GT-Intercooled Kenne bell 2.1L supercharged @10psi, C&L cold air intake, mass air flow, Sumitt racing 75mm throttle body, Magnaflow catback with Bassani X-pipe, chip and dyno tuned, 3:73 gears, B&M short shifter, FMS lowering springs and UPR caster camber plates, UPR upper/lower control arms, UPR subframe connectors. Kumho 275 up front/Kumho XS 315 in rear. Currently 420RWHP/435lbtq
-Daily Driver 04 Toyota Tacoma PreRunner, Blacked out, TRD suspension, K&N filter. | 
will i see more hp 
