Appreciate your help, but unfortunately, of that list of 14 cars, 11 are various 911s (the 930 is a 911 Turbo and the 959 is an "extreme 911") and three are 356s (the 911's predecessor). That's exactly the problem I'm finding--no 550s, no RSes, RSKs, 904s, 906s, 907s, 908s, 928s, 944s, 968s...the only racecar anybody seems to make is every possible variation of the ubiquitous 917. The manufacturers seem to make a basic 911 body mold and then vary a few panels to make different versions, rather than making any of the really interesting Porsches.
But thanks for your efforts!
Stephan