I got a show down with our new store manager. he's got a gt500 it looks like a 05-09 shelby gt500. think we might go sometime in late march. it's bone stock looked at the specs and i think i can take him. need input on what anyone thinks. my mods are in the sig, and by then i'll have the new converter, stage 2 blower cams, and lca's on. wanting any other helpful hints.