The original ride height had the car sitting about one inch lower in the rear than the front. To get a level look order the rear springs 1-inch higher than stock.

The first year for the GTO was 1964, and it was actually an option on the LeMans series, with buyers selecting option RPO 382 and paying $295.90 extra. Three body styles were available, including a two-door coupe, convertible, and hardtop.