The Avenger smoked its trans in 7,000 miles and is on B/O with Chrysler so he worked with the dealer to get into a crew cab Frontier they had on their used lot. Well he got it two days ago, but put a full dual 2 1/4" exhaust with a magnaflow dual in/dual out muffler and 2 1/2" tips. 4.0s get loud when you dith the B pipe cats but impressive power gains. Tried to load my Hypertech to it to eliminate the WOT restriction but its calibration was not supported even though my mom's Pathfinder is. Exhaust in front of the rear tire in the gap between the running board and tire. He has an intake on order but it still moves pretty good. Got to 90 pretty quick on that uphill onramp.