Looks like a great start to the project. Will look great when done.
Please tell me that the cart is somehow attached, or somehow fixes it's position to those framerails. Otherwise if you whack the car it looks like it could slide off?
It can't move Grant. To locate the body I used a stack of washers (8 high or about 1") .875 OD, with a 5/16 bolt through them at the dowel holes in the forward and rear frame rails. If you look close in the forward frame rail area of the first photo in the "Replacing a floor pan" post above you can see it. I measured the locators in an X to make sure the cart was square (and the body once down on the "dowels".) If you look close at the pics you can see the rear blocks are movable, the fronts are fixed (on lag screws). I used a threaded rod to attach the rear pads to the cart "clamp style".
