Jeezus..... Nobody said it CAN'T be done. It said shouldn't. AGAIN, you linked the reference source for the info.Here ya go, proof it can be done
The 8.5:1 is also a common guideline to follow if you don't have the ability to dial in a combo (those of us that are average Joe's & not familiar enough w/all the ins/out of various combos) that might be pushing possible boundaries & w/o an ECU helping keep things in check. It's not an absolute. It's a recommendation for the general publics success.
The guys in that video back what I'm saying. They acknowledge pushing the dynamic compression ratio of that combo (mentioned @ 9.2) but said their experience w/previous combos suggested it should work. They also stated the importance of the parts selection, the importance of the tune-up, importance of cam timing, & they're utilizing a blue-printed combo w/a computer controlled EFI set-up.