There is no way to tell just from looking at the body, but there are basically 3 versions of the F103. The RS chassis is the most basic. It has the standard front suspension, the standard battery pod, FRP chassis and comes with rubber tires. This is the chassis that ships with LMP bodies. The RX chassis adds the multilink front suspension, ball-pivot battery pod and foam tires. The LM kit is actually the TRF version of the car. It is the only kit that ships with the wide LM chassis and it also incudes ass TRF hopup options. If you get the RS or RX chassis, you will want to get the FRP long upper deck to reduce chassis flex. Good luck!