i have a 2003 mustang GT Conv. Not a huge racer, just like to go fast when needed. i've added, SLP Loudmouth exhaust, 75mm throttle body, throttle body spacer, underdrive pulley's, BBK shorty Headers, 80mm MAF, K&N CAI, just curious how much horse power it all added, and approx. how much time i dropped in the Quarter Mile