Have a 1977 Camaro with 4" hooker headers and side pipes.
Side pipes rusted out, Hooker no longer makes the pipes for Camaros.
Know where to have some custom made or a good set of used ones?
Thought of that and did stopped at a local shop. Only thing is the brackets. Would somehow need to figure out how to attach them under the rocker panels where the existing brackets are.
Can't help on side pipes, but you posted this tread in one of our vendors forum - Custom Works. Kieth mainly does suspension along with some other 2nd gen modifications. http://www.customworksperformance.net
You might ask a moderator to move this to an appropriate forum, you might get more replies. Good luck.