Porsches own web site now has a good section on the companies history and models. The page on the RS ( http://www.porsche.com/uk/accessoriesandservice/classic/world/models/roadvehicles/1992-911crs/ ) is pretty good no mention of the ficticious ‘lightweight’ here – just a good summary on the RS Coupe and the N/GT and a mention of the Touring. The RS America isn’t included here – but the picture above the piece is in fact an RS America!
The 3.8 RS of 1993 gets its own page which is equally good.
Linked from both these pages is a gallery of pictures grouped by years they include a Maritime Blue RS, Speed Yellow 3.8RS, Guards Red RS America.