Sage used to do this but last I drove they were out of business. (did they relocate? news, anyone?) Check Relics on Camelback around 3rd Street. There is also a place across the street from there, forgot the name but you can identify it by its rusted gates out front. None would be what a scavenger would call affordable. Sometimes you can get lucky at a scrap yard like Davis but that's a total crapshoot. As for installation, cruise the Marketplace message boards for the dozens of metal fabricators referred there. Good luck!