there were: 396 black 56 white 4 development cars inc. 52 moonstone blue Chassis numbers start with.. `GG` and go from 38600 - 39099.. ( should be stamped up for an original car ) Engine numbers start with YBD0015 - YBD0535 and are stamped at the `front` of the engine block behind the cambelt cover To know what engine goes in what car you need to check it against the `TICKFORD BUILD LIST`.. i have this, and you can contact me anytime if you need any information The build number of the car is determined by its chassis number and can tell you this also if you don`t know and want confirmation All the 500`s are right hand drive too Hope this helps.. all the best ... Wayne ( Karting )