Yeah, just rust. Lots and lots of rust. Broke 5 of the 7(i think) bolts on the hangers and such. The heat shield bolts were rusted to all hell, and of course you can't get to the header bolts themselves off unless the heat shield is outta the way first. Took about 2 hours to get the heat shield and header off. Everything was pretty much smooth sailing after that. The exhaust I got was used and pre-welded/fitted to a Talon, so all the hanger mounts were there and in the right place.