Your polluting turning a Camaro SS with a 6.2 L/376ci motor, I love pulling up next to a Prius with my cutouts open and 22* of catless overlap on a nice HOT azz day in humid shitcago.
L99 has NO cats, the blown GTO has NO cats, and I sleep well and love the fumes.
Op if you want headers and can deal with the CEL light on and the horrible sound when DOD kicks in then just run them. If not just tune it! I tuned mine back in 2010 just 10? Weeks after delivery and I haven't had a problem.
01 Ws6, m6, ASC#618 of 1583,40k Miles,shortblock built by AES the rest built by me,Ls3 416,FAST 102, NW102,LPE Ls3 heads,LsR 243/259 .624 114+3 ,C5r T/c,all ARP'd,12-1 comp,morel L/b lifters,melling O/P, kooks 2" headers,FTP 104mm lid,JAAM RamAir Kit,PB 10% UDP,UMI K-member,UMI T/A relocator,UMI SFC's, UMI upper and lower c/a,SLP T/A,UMI LCA's,UMI adj. PHB,Racetronix f/p,sjm abs delete,katech tensioner, dhm dual cutouts,magnaflow CB,Koni adj shocks,BMR springs,Moser 9in w/35 spline axles,4.11's and spooled, viperized T56,tuned @Straightline's mustang dyno 545hp/524tq