Good build. This is probably stating what you already know, but you should generally use metal motor mounts for gas engines if you can. Not essential, but just helps that little bit with cooling for gas engines which run hotter than nitros.Don't usemetal control rods for the throttle on a gas engine to avoid risks of server jitteror (worse case) brown out from the electronic ignition system. Some servers are more sensitive to this interferencethan others. Nylon connectors should, in theory, prevent this, but not in all cases depending upon the routing of the spark plug lead. A Sullivans nylon rod is best.