I’m actually in the middle of building something similar, glad you mentioned custom hubs because I’ve been trying to figure out how to convert my China frame to accept some 5” go kart wheels. Any video/picture of how you made the hubs?
What kind of rear hub and Wheels and tire set up do you have on it I’m in the process of trying to build one right now and I’m not very experienced with building stuff so if you can help that would be nice
Swap a honda GX440cc engine bro or a replic, I've see some ones on Amazon under $200 Deleting governor you can swap piston, rod, rockers, springs, carburetor, camshaft, port the head or even add a turbo, they sell clutch and automatic starters even on eBay or Amazon, súper cheap engine 440cc produces over 13hp and modifying the engine you could get over 60hp