My 90 forks are canadian, so USD, the 1100 forks are from a US bike, also USD.
I have looked at the fiche and the 750 forks (US 91) are markedly different internally from the 91 1100 forks. I know it's just a drawing, but they look a lot different than the 750, and keep looking the same, old school damper rod style (almost) further into the 90s.