Or an aftermarket one you don't use? Need one for my 85 350. I was just reading about Michigans 94 db noise levels for this year. Does that mean stock type level? That's 2 db less than than even Cal. Either way, I've got an uncorked 350 that's loud as H*LL and I need to plug it up a bit. If you've gone aftermarket I'd be happy to buy that old stocker laying around.