How To Cure a "Rappy" Exaust?

Thanks Rumble,

I'll look those up and see what I can afford right now. I'm tempted to make make own 18" long 3 1/2" dia. tips and see if that helps. I figure I can get 36" of 3 1/2" pipe and a couple of reducers for cheap.

This won't be permanent, just until I can get my situation in order.