I'll get some more; this is the only one I could find in short order.
I got a 782 from Mike a couple Plow Days ago and the engine from that ended up in my 682, and the rest went under the knife for a complete refurbish. New paint top to bottom and added some goodies.
As for the Command swap, just about 100% of the parts, engine plate, exhaust, heat shield, come from the 1863/1864/2084/2284. The engine I got was from a 2206, and used half of the driveshaft.
From memory, the only parts I needed to modify was cutting an inch from the front of the exhaust heat shield, trimming back the exhaust outlet (and removing one bar from the grille), and the driveshaft.
Its rock-solid reliable. Though I completely went through the 782, it is as much of a daily-use tractor as ever. Even with the Wheatland, 2072, and 682, this is always my go-to unit (basically anything that doesn't require a cat-0 hitch). It sips fuel too, it easily uses 3/4 of the fuel that the KT17 (now M18) does in my 682.