My local RB workshop has just picked up an interesting car - bought it as a repo with a stuffed engine.
It is not a 260RS but it is a series 2 Autech -awd neo engine, manual, lots of carbon fibre bits: bonnet, 260 type spoiler, cf trim inside... came with 3in exhaust HKS suspension etc. I'll try to get the chassis number next time I am there and maybe someone with Fast can check to se if it is a factory special or a one off by Autech.