Interesting, 1.65s for a Chevy... New to me! (I make no claim to know everything, so it's not an ego hit when I say that. I LIKE learning new stuff). Since we avoid Summitt, that could explain my ignorance of their product.
We've found the vast majority of available stud/guideplate combos require .350" removed from the stud boss. Hasn't ever failed! Plenty of high-revving small blocks "out there" built here.