Anythng will be a great improvement over the K truck. I went from a str to a losi 8t 1.0 mstly because I was tired of the str always being broken and the parts were difficult to get. Another factor was my LHS owner made me a smoking deal on the 8. I loved the losi from the beginning and I now have a 2.0. The truck and buggy can take the same started box and they have alot of parts in common. I love my 2.0. Mugen has been in the 1/8 scene for a long tim. They make very high quality cars. It is interesting to me how much the mbx6t and the 8t 2.0 share in common. Their bodies have similar lines the f/r ride heights are exactly the same handling seems to be similar and I am sure I have missed something. Either losi or mugen will treat you right.