CL is a great place, that's where I found mine. Got it from a guy down by Latrobe. I'm from the Northside of Pittsburgh, it'd be nice to have members to hang out and or wheel with.
I'll sell you mine if you're interested. Don't really want to sell it since it's really hard to find them used around this region but I need the money.
It's made by A.R.E. an comes with the special clamps and keys. I'll let it go for $650.