$1,000 is a nice budget. You can shop around on the few 3800 forums and buy alot with that. I got a PLOG(front header) and downpipe for $110 total which is suffecent exhaust for most cars for 3.6, headers(speed daddy off ebay $200) would ofcourse be better but buy half this crap used from memebers man. This forum has some pretty honest guys