I have a 1999 k2500. I am in the process of replacing the 5.7 with a 383 (vortec) with aftermarket heads and cam. I have been able to get most issues solved, but the one I can't is one of the last. I have taller valve studs/roller rockers, so the factor valve covers will not work. I have some taller valve covers and i am trying to maintain all factory components of the truck. The only problem is that the ac compressor and bracket won't clear the cover for install. I was just wondering if any of you have run into this problem. And if so, how you went about fixing it. Thank you in advance.