Re: 572 - 67 SS Fitment?
I would recommend going with the 502 crate engine as it is identical to a 396 to the casual observer.
The 572 uses the tall deck block which is ok but is wider and may be tougher to get headers to fit. I like surprising people rather than advertising that you have a humongous engine.
There is always someone faster; label the 502 with 396 emblems ;if people think you have a 396 there is never any shame in losing.
68 Camaro convertible, 6.0 LQ4 with LS3 heads, Vintage Air, 750 street demon carb, eddy perf rpm, GM hot cam, Hooker headers, 4L80e, 12 bolt, 3.55 gears