Installed with the Tri-Y header, sounds great compared to the rotten 30+ year old factory exhaust. Installation was smooth, 2 minor hiccups, 1 no instructions, 2 the flange that connects the catalytic converter to the muffler needs shorter bolts. The first issue is pretty minor as it wasn't to hard to figure out once I was installing, though I did initially use the wrong gasket at the input of the catalytic converter, easy fix. The second issue I was unable to tighten the bolts all the wat at the output of the cat because the heat shield was in the way, also couldn't reverse the bolts for the same reason. Solution was to use 2 nuts from the "extras" on the bolts then slide them in and I was able to get it tightened without the heatshield blocking the threads. The only other issue I had was the hanger for the cat didn't line up on my 92 Samurai. This is by far the best kit I've found for a full replacement, the price and quality are fantastic. Would recommend to anyone looking for the best DIY solution.