I have a 06 LBZ with, 4" straight exhaust, shim kit, air dog 150, brute force intake, S.C. stage v, cognito braces and sleeves, and a pretty hot race tune. My best time yet is 13.36 with a 1.84 60'... What is the next mod i can do for less than a grand to get some more H.P?? (maybe bigger exhaust,downpipe or nos?). i just want more. Thanks for any help!