Motocultivator gearbox

I have 2 of these lying around and have been thinking if there's some use to them.
They have gx240 engines but are upgradeable if needed but most importantly they have a clutch.
Speed on these is dismal with about 4mph in third gear.
They are pretty much unbreakable though.

Just wanted some thoughts on if there's anything to do with them so I can get that out of my head.

Also have a complete scooter engine lying around which also might be a good option for a build but that's for another day

Might be cool to build a 4x4 mud mower using that gear box as a transfer case. Belt drive to the input shaft, 2 drives to some FNR transaxles with the chain swaps in them, and you'd have a pretty neat little rock crawler!