Regent 500/600/800/1800 blade on AC 700

[mbsengineer 1]

I can't seem to find anything related to this so... Are the front mounting points differently spaced on the Regent 500/600/800/1800 series versus the AC 700 series? If not, I assume I could use a snow/dirt blade from one on the other? Also, I'm wondering if a 42" blade is practical (or even usable) on an AC 700? I know the tractor is about 36" wide itself, so if you tilt the blade to the side, I'm wondering if 42" is wide enough to be able to push and clear the tractor? I assume it is since they did make a 42" blade for the AC 700 series, but just wanted to verify with some people "in the know." :) Thanks.