According to the layout of the pipes/mufflers, the sides are not symmetrical. I purchased the pipes and mufflers separately, and purchased offset/offset mufflers-- maybe my problem? It'll work , it just looks a little funny. Anyone with duals on a '65 - '68 full-size know what theirs looks like offhand? Center-to-center on the mufflers maybe?
Classic Exhaust, 805 Pro-Gram Parkway, Geneva, Ohio 44041. (440) 466-5460 I'm still fine tuning the installation-- the driver's side hangs about perfect but had a clearance issue around the front crossmember (I didn't have flats added to the the main pipes). The passenger side seems to hang fine but the muffler doesn't seem to align with the factory bracket. However, not too bad for the price ($220, duals) I think.