I started thinking today it probably makes more sense to upgrade my truggy than to buy something else. One thing I definitely want is a better steering servo. I'm using a Hitec 645 now but either its bad or something is wrong. The steering does not seem to be binding at all when I remove the linkage. Should I get the Hitec 945 or something else?

Also, I'd like to get a nice O.S. .21 engine for it. Looking at Towers there are many different models. I probably don't need a pull start since I use a starter box at LHR all the time. Which one of these is best? (right now I'm using a Hot Bodies .26).

O.S. .21 RG Buggy (Sport)
O.S. .21 RG (P) Buggy (Sport)
O.S. Max-21 VZ-B V-Spec-T
O.S. .21 VZ-R (P) Rear Exhaust w/20K Slide-Valve Carb
O.S. .21 VZ-R Turbo II w/20K Carb