bolt on muffler to replace renntech....
 

I have a '92 full renntech 500sl with renntech muffler. It is too loud! Apparently a po cut into it and removed baffles and welded it **** (there is a six inch flap in the bottom). I need a replacement that has nice tips and is significantly quieter and that is a bolt on replacement for the renntech. Any ideas greatly appreciated.