The battery tray was modified to allow the extended plenum and fuel rail to be fitted. All the RS500s were RHD, and were originally supposed to all be black, but the work experience boy was on, so some White and Moonstone ones found their way into the '500 pen'.

The aerial was automatically retracted when the boot was opened (well, unlatched), otherwise the lower spoiler would bend or break it.

The 8 injectors were fitted, but the secondary set were not connected to the ECU. The L1 ECU was the same as the 3 Door's ECU, but with a map suitable for the T4, and 4 yellow injectors.

The 205 YBD block was specially cast for the RS500 and was not a regular production item, as with the 205 YBB blocks.

The fog lights were supplied as a dealer installable option - the customer could choose whether to have the brake cooling duct grilles installed at delivery instead. The front splitter was also installed at the dealer, so that it wouldn't be broken as the car was taken onto and off the transporter.

Did you know that all the RS500s had to have new water pumps installed because the originals corroded? They were left idle, outside, for 6 months after they were originally built while the designs and delivery of the new body parts etc were finalised and consequently installed.