i have TOGs, from 3800performance because i needed all the C.A.R.B. paper work to make them legal for emissions out here in cali, and with a bolt in TOG dp from zzp or the w-body store the TOG install is super easy. However the TOGs at 3800 performance must come wit the ceramic coating, since thats all he has, and that coating on my set and a set for another gtp owner i know dulled out really fast.
with any header and dp set up its going to be louder than stock and have some ticking at idle, who cares, run em. i hear very little ticking at idle and none will driving.