Call Solo Motorsports in Azusa. They are north of the 210 east of Irwindale Ave in Azusa (626.815.1430). Or Duffco on Arrow east of the 57. (909.305.0533). They've both got a veritable cornucopia of tabs available for your welding pleasure.
I've known Dave(the tabzone guy) for 15-20 years(he's in my hometown). I wouldn't recommend him as a source. Very, very slow delivery on products and his custom stuff that he's done for us usually needs re-doing.