Walker has always been a Cadillac exhaust brand and this muffler is no different. I haven't modified any of the pipes on the truck and the muffler fits over the pipe with no problems. The front suspension was a bit of an issue as I had to trim the hanger link on the muffler to line it up with the hanger. If I had a hanger available I would replace the old hanger and move the new one but the old one was rusty and I didn't want to ruin it by trying to take it off as I am selling this truck and just wanted to replace the rusted muffler .