Y'know, that's pretty much my exact line of thought regarding these old compacts. I was (am) looking for a decent SE/30 as my primary compact, but the Classic II was a great deal (at the time) & was always my second choice. I greatly prefer the look of the Classic/Classic II cases, but functionally they clearly don't compare to an SE or SE/30. So that begs the question: has anyone tried putting an SE or SE/30 in a Classic case?
I know the back ports don't 100% line up, an SE/30 back bucket probably wouldn't fit on a Classic front (on account of the Classic's slight curve), a Classic's analog board might not power/fit an SE/30 logic board, but I can't imagine that a moderate amount of modification wouldn't result in a decent SE/30-powered Classic. Has anyone tried/succeeded doin' this?