It should fit to the tank fine, they really weren't any different on top than a 1680 (or a 2588, for that matter). But you're probably gonna need a booster for the clean grain auger of some sort, and you're probably gonna have final trouble at some point. I think you can retro the cast final drive covers from a 1680 if you don't already have them - or you can use a set of scrapyard 2188 finals, but it'd be pricey.