bought it from red star ....and put as many options as possible already ..Red star boss is quite resourceful ..totally spent 10k on extra shell . 3 sets of types . viper plus 2850 motor . Sanwa waterproof servo . and one reciever .. I am too lazy n. just bought the demo car at the shop which has built in all the options and electronic ...will keep an eye on this post and play together .. eventually , I prefer to play at aco book of the environment and I love the air conditioning room too much.. by the way . where to get the R 35 shell with a better deal .. I dislike the factory R8 shell n wanna to buy the 35 shell