Just as my opinion, for what its worth, the 84 125M is nothing special. Had a few of them over the years, a couple 85's as well. They are a pretty bog standard and plentiful model, i see them on facebook marketplace all the time here, i don't bother with the horizontal motors anymore, sold my ATC90 i restored this year and that was my last horizontal i owned. They are a decent machine, everyone says the trans is weak on them, but its not the trans, its the design of the shift drum stopper, i've fixed my share of them... Now if it was an 86 125M thats a whole other beast, those things are unicorns in nice shape, but also really hard to fix up since there is very little if any aftermarket stuff for them, no repro fenders or tanks, engine parts are hit and miss with other models for swapping, but a cool model none the less.
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1984 Honda ATC200ES "Big Red"
1982 ATC200E "Hondie"
1988 TRX300FW "Project Quad" Still in progress....