Hey guys gotta NewB here... I have a 99 Z28 M6 with just a lid, maf, kooks lt, oryp, qtp cutout and gmmg. It's time for me to stop with the boltons and get some real power

My car has 90,000 miles on it though so would it be safer to get a good complete heads/cam package (from Norris here in Cntrl Fla of course) or get a power adder? I was thinking the heads/cam then getting a stronger rearend (w/ probably 3.73s), stronger driveshaft, and suspension parts then getting blown. Tell me what you guys think I should do first.