Yes, however, it was generally only found on the earlier models (92-94) which aren't in the game

. Some of the 95 models were sold with the active aero, but after that no GTO was sold with active aero up until the end of production in 2001.
The concept HSR II is the only GTO variant in the game with active aero still functional within GT5 and that has already been mentioned in previous posts.