When I went to the track last year I took my B5 rear motor and my B5M mid motor and would run them back to back to see which car was better on that day for the track conditions. I bet 8 out of 10 times I chose the B5M. That being said. I bought a losi 22 3.0 not too long ago. And now every time I go to the track the 3.0 is better than my B5M. I would say if you want another 2wd buggy. Even though you are considering a rear motor car. I would look into the 22 3.0. and if you really really want a rear motor car. Find a used 22 2.0 rear, or a B5.