I welded up this home-made camber checker. I used it for setting up my TVR, but it's just as cool for a Pantera. It's set for 15" rims.
The allen bolts are adjustable to level it up - I trued it on a Surface Table at the local college. I got "weld in" nuts from Ace Hardware.
The angle gauge (inclinometer) was about $30 on evilBay.
It's pretty straightforward to make.