With the Merkeva listed as a metal chassis, I am in on that. I can fix the wheels if they are plastic on plastic. I have the urethane Merkeva kit and man, I sat down for a couple weeks and figured out what it would take to make the chassis RC. Too much really. Pershing trannys and out drives, Cheifton track and sprockets, P4 idler wheels, home made tortion bar system M41 shocks. Yeah I drew it all up and i figured that some day in my retirement i could build it...... Then I learned Henglong has one in the que....And I can say that as there are other people that know about it now.