Why limit it to Windsors?
How about a Cleveland bored and stroked? I know they can achieve 408 CID, 427 has to be just a bit of development away, and with the Cleveland you have the great canted-valve heads.
Look at some of the 400M engines that have been cruising to victory over the FE engines in the Popular Hot Rodding Engine Masters competitions....
According to popular lore (I have never seen one) there are even alloy blocks out there, so weight could be further reduced beyond a factory iron block.
The problem with the Cleveland blocks was two-fold....the cylinders walls were very thin, limiting the amount the engine can be bored, and the oiling system did not prioritize the mains, resulting in many a useless engine when the main bearings spun.
All things that could be (and, reportedly, have been) worked out...
Of course, the ultimate would be a 427W block with Chi 3V heads.....but, that's another story altogether!
Cheers!
Dugly
