I have been conversing with these folks about exhaust and it seems they have developed an affordable 4kcsq hi perf exhaust "The sport exhaust has one silencer, it is currently custom built, dinomax muffler w/lifetime warranty, aluminized, galvanized pipe, tip opptions being finalized,-$359.00 w/3 inch crome tip." Not bad I thought. Matthew Twigg QC 5442