You can stiil get dozer blades,tillers,mowing decks & baggers for most old wheel horse tractors because the design did not change that much Between the B,C & classic series Wheelhorses and Toro/wheelhose tractors until 2007 when classic series was discountinued. Prior to having a Garden tractor with a Bucket loader. I did several earth mowing projects with a GT & a Dozer Blade even use to spread Gravel with a Murray LT with a Dozer Blade as long as you take smaller bite and know your tractors limitations you can do a good leveling job. But I would say aleast step up to a Garden tractor with a dozer blade or a Johnny Bucket over your exsisting Scotts lawn tractor witha Dozer Blade Here is a link that might be useful: Johnny bucket

I don't know the answer, but I doubt the deck cares how the engine turns its pulleys. A horizontal engine uses a front pulley to turn the belt the required 90º, where the vertical engine is more of a direct drive. Mounting attachments and clearances are far more important.

Ok, I got to the bottom of it. It's a 1963 753 or 653. The 653 came with a 6hp Tecumseh and the 753 came with a 7hp Kohler. If I put a 7hp Kohler in it it'll be a 753. Here is a link to one that's restored, scroll all the way to the bottom. It's the last one.. tractortrader, I'm going to restore it to original spec although a big V twin would be awesome though.. Here is a link that might be useful: Restored 753

You're right on Baymee. My tube of bentonite has been on the shelf for years. If for some reason a trans gets opened for a case replacement or input bearing and is working fine, I'll mix it up with an extra few ounces of new. If it worth repairing with internal issues- ideally one should clean it up well and use OO or similar. That is a real nasty job.