Since the Contour is back up and running reliably it's time to get back to bigger and better things.
I revised the way I'm going to do this (yet again) and will not be using a modular but instead dedicated fixture jig for the car (more expedient). The chassis will be supported at four points on levelling jacks. Once I have the roll cage in the chassis will be more than stiff enough so I can cut up the floor, etc... and then roll in the powertrain sub-assembly on a different jig/cart that can be secured to the vehicle after alignment.
Anyway, I started making and installing the levelling jack points. These are bent 16 ga steel with two 12 x 1.75 metric nuts welded to the back side. The jack points attach to the frame/body structure and can still be used when the car is finished should the powertrain need to be removed.
Front (left)/ Rear (right):
Front welded in:
Rear welded in:
Jacks bolted in (passenger side):