That’s not a dolly that you can run the bike. That’s just another wheel kit.There have definitely been a couple on here that lift the bike up under the engine. I’m not going to bother to search for them though. Maybe the OP could.
Do you have a picture of that mod? I wouldn't mind something similar on mine.That's the one, another mod, I welded a short bolt straight up under each foot peg so when I lift up the bolt sticks up throug the foot peg bike can't slide on the plastic skid pan, bigger the wheels the better.