Defination of GS vs GT; and was there a GS-GT
 

In an article by Tom Cotter , the famous writer, on a white Carrera 2 he says something like:
The road Carreras often had steel bodies and gas heaters. Rarer was the Carrera GT , with only 14 built, which had a steel body except for the doors, hood, and trunk (engine) lid of aluminum, Speedster style aluminum bucket seats, Only the windscreen was glass, the side windows and back window were plexiglass, and there were no rear seats. There were no bumper over-riders and no heater.
What was the differance between that and the GS? And I thought I saw a 356 with the word GS-GT on the back, so is it possible to have both in the same car?

How many 4-cam cars do you have or have had ?