I'm on my 2nd set of Sil Moto conicals. The first set I bought out of Canada & were race megaphones & super loud. 2nd set bought stateside w/baffles and were a few dbs tamer but a sweet song going through the twisties. From what I heard they make their exhaust in batches (round, oval, hi mounts, megs etc.) & then release to distributors. Won't be unhappy with those puppies. And yeah, get the stainless lines.