New to this board
 

hello boys and girls, i am finally gettin back to V-8 RWD, i am interested in the '03 cobras, jus curious how much HP can be had with bolt-ons, i seen sum things suggested like pulley and exhaust, i wanna see if 500hp @wheels is possible. thanks, hope to stay on here for awhile.

500 rwhp can be done with bolt ons on that car. I've seen one in person that had 440+ w/o headers. Welcome.