My first mustang was a 02 GT with a KB 2.1 on it that i installed my self, i had it custom tuned down at Tillman Speed in Aston PA and they did a great job, car made 410RWHP and 424TQ on Dynojet...hit 12psi on graph and timing was a safe 16* cause both the 12 psi was to high on stock block and...