| PTG ran a GTS-2 car for a year in 97 I believe. Hard to compare it to today's rules, but essentially it raced against turbocharged Porsche's, whereas in GTS-3 the Porsche's were NA. In comparison to the GTS-3 M3, it allowed for a lighter car (100-200 lbs) and no restrictor, no rev-limit, and a 6th gear. |