Coming along very nice Greg,
Those UPC brakes are brilliant. I have fitted several sets to 57-69 Chevs and they do perform as long as you set up the rest of the system to suit.
Bit of a let down using a Pontiac engine though...
I've always thought it was kind of strange that it's perfectly fine to put a brand X engine in anything, but if you turned up with a Buick nailhead in a Chevelle, it would be the end of life as we know it.
I know the aftermarket support for Chevrolet engines is gigantic and relatively cheap, but at the 'stocker' level, they're no better (or worse) than anything Buick, Oldsmobile or Pontiac turned out.