YEah,
www.HPIRACING.COM used to sell them, aswell. They are discontinued as are the ones from Protoform. You could call them up though, it's very common for these larger compnaies to have a few "sitting in the back room".

I used to have a Chyrsler 300M body that was discountinued a year before I got it. I called HPI, they said they had some sitting around, they even sold it to me for like, half the price.