Ok i recently picked up a 30xxx mile 03 cobra thats bone stock except for 3" mac catback, K&N FiPK gen II and MGW. Im looking for a setup to get me over 500 rwhp on a eaton and this is what ive thought of so far... im looking at getting a stage 7 steggy port with a 2.76 upper pulley only and a good tune. is there someone out there running a similar setup wondering the hp an tq # and also how much boost. an also is it better to run a upper pulley and lower pulley? ive been more focused on just a upper pulley only.thanks
