www.autoexplosion.net it's the same as the other link I gave you for thebombshop. They're in Gardena. You can also try J&S Extreme in Covina...MOBWorks is in Orange. I don't know if they're still doing conversions, but 20/20 autobody.
Assuming these pics will work here's a couple cars that Auto Explosion has done. The owner of the Prelude actually works there.