I know quite a few places that will do it. Nation, on Dezert rangers there are a few guys in so cal, that do exceptional work!
Two off the top of my head are, BTF (Brandon and Travis Fabrication) ill get info asap for them.
http://www.btf-fab.com/index.htmlTrac- performance, i dont know them personally like i know BTF, but they do amazing work!
http://www.trac-performance.com/If you give me some time i bet i could find a couple guys in maybe Temecula, or close to that area, that do work out of there garage or small shop.
Let me hit up one more guy and ask him if he would be interested.