parade lap cars, the Delta 88 was chosen. These cars were used as track cars to parade celebrities and guests on the track. There were a total of 92 Hurst/Olds Parade cars. 1975 The Hurst/Olds in 1975 was the first General Motors car to have "Hurst/Hatch" removable T-Top style roof installed. The car is based on the formal-roofed Cutlass Supreme coupe rather than the semi-fastback Cutlass S used in 1973–74. The car was available in either black or white, with either a black or white half vinyl top offset by a wide aluminum band. Either a W-25, equipped with an Oldsmobile 350 engine, or a W-30, equipped with an Oldsmobile 455 engine could be had. Due to the environmental regulations at the time, this was the first year that the United States Environmental Protection Agency mandated the addition of catalytic converters mounted in the exhaust system. Due to the added expense, only single exhaust was available. The hood from the 1974 Hurst/Olds, with the center mounted louvers, carried over. Gold stripes adorned the sides of the car, as well as the trunk, hood, and mirrors. The car also carried gold 15"x7" Super Stock III Oldsmobile rims. Interiors were similar to 1974 except for revised door panels and new reversible vinyl/velour seat cushions and backs for the all-vinyl Strato bucket seats. The most popular interior color combination on '75 Hurst/Olds was white seats and door panels, and black carpet, dashboard, steering wheel and console. Additional colors such as red and beige dashboard, carpet and seat cushions was also available. The Hurst Performance 'Dual Gate' Shifter carried on for 1975. An optional digital LED numerical readout tachometer was available and mounted on the center console by Hurst Performance. 1979 Another car, now called simply the Hurst/Olds, appeared in 1979, based on the Cutlass Calais coupe. It used the L34, Oldsmobile's 5.7 L (350 in³) V8 engine. A Hurst Dual Gate shifter was standard. After a three-year hiatus, the H/O returned for 1979 on GM's newly downsized Cutlass body. The first H/O to be built entirely by Oldsmobile Division, it was also the first H/O that did not offer a 455 engine. It was, however, the only GM G-body to offer a 350 V8 in 1979. It was also the first W-30 to come with the Olds 350 and not the Olds 455. White and black again were the color choices, but with