I have a B&S 14.5 I/C engine (2800 series) with the original box muffler on it in my crane, very loud and annoying, needs to go in the trash, and I want to install a custom, and very quiet, exhaust. I have a flange and 1-1/8" piece of pipe that goes down and bends to the rear at 45 degrees. What I need to do is somehow stuff a muffler underneath the crane, and a tailpipe going down, or out the back. Can I get some advice on how to do this, and where to get the parts? I could adapt the pipe to a different size, if I can find an adapter. The biggest problem is space, as I am rapidly running out of places to put things, but a muffler could go underneath and near the rear tire, maybe, so ground clearance wouldn't be as much of a problem. Any advice on where to get the parts, what kind of muffler to use, etc.? Obviously the muffler needs to be both small and quiet, if that's possible. I will try to post a pic, if it will let me.