Here's soemthing for you - Its an ex-Listerine BTCC E36, currently for sale, situated in Australia. (the picture is from the box of a model, so its not a current pic).
http://www.racecarsdirect.com/viewlisting.php?view=8262
Is it possible that this is (at least the shell, if not the running gear aswell) for the VLR car that Longhurst brought in for the AGP?