Actually, Darkside is now selling complete 1/12 kits as well as the conversion kits.Larry B said:When you ask about three springs are you talking about a three shock car. If so there are many manufactures of the 1/12th scale three shock car. KSG, Hyperdrive, Associated, CRC, all make complete kits, Mavrick, Darkside, Leading Edge and others make a conversion kit. As for tuning the car: follow the 10th scale items you can get and read alot on here about set-up on the different threads. Then Adapt!!