This MOC is an C-Model of 42039. I based it off of Agrof's Class 1 Unlimited Buggy. You can use the set's tires, but I would recommend using 81.6mm balloon tires and Technic Racing Small rims, which aren't in the parts list. Also, the 3L axle in the LDD file is for the seat, and the white assembly is for an alternate hood.
Have fun and happy building! Don't forget to like.