Now that's a steal. You owe jeep big time!
I would be very hesitant to run that crank. just looking at the silt in the bottom of the engine, you wont get all of that out of the rod bearing without disassembly.
ive had great luck with hot rods bottom end kits on the last 3 motors. grizzly 450, grizzly 660, and rzr 800.
Havent had to replace a Honda crank yet.
Also, not sure how these shafts are inside the trans, but as you already know, be very careful with those bearings inside, the last grizzly 450 I did, they were smoked from particulates. had to replace the entire trans assembly, every bearing was bad. including case bearings.