i am running the mongoose. but i have modified it somewhat. moved battery pack to where G4S is, reciever is where battery used to be. and now have completed the G4S steering instalment. each change i have made has been improving the car, but due to modifications, some teathing problems which have been sorted out now. the best improvement made is the steering alone. no belt rubbing issues at all, and an increase in akerman gives the car a whole lot smoother feel and improved steering. unfortunately looks like its gonna rain this round, but i have managed some track time to test and setup the car after these mods. very stable now. but yes i could have baught a G4S, but i had invested in 2 mongooses, so i had to make the most of what i have.