The 1970 was last year when paved and dirt oval races were combined in the USAC National Championship (apart from the episode of 1981-82). Since 1971 dirt races were segregated into separate USAC National Dirt Car Championship. In the 1970 USAC Championship 10 paved courses and 5 dirt track races were held. The USAC National Champion and Indianapolis 500 winner was Al Unser. Big Al had a dream year winning 10 USAC Championship races on the way to his first Championship. Unser wins 5 races on paced tracks, including Indy 500, and all 5 dirt tracks races. His 5 dirt victories included Springfield, DuQuoin, Hoosier 100, Sedalia and Sacramento. On the paved ovals Unser raced his famous Johnny Lightning Colt – Ford. His car for dirt tracks had the same name and livery, but it was King – Ford Dirt Champ Car, built by Grant King. King, son of Chinese parents, born in Victoria (British Columbia, Canada) was one of the mechanics – car builders who provided their skills to many midget, sprint and champ car racers. King begun earning his reputation in sprint cars building in early 60s, when he moved to Portland, Oregon. In 1963 he migrated to Indianapolis establishing his shop on Crawfordsville Road. He worked as a mechanic for many Indy car teams and continued to produce his own sprint and Indy cars until the beginning of 1980s. The scale model is from rare GMP Dirt Champ Car Legends 3-car set, representing Foyt’s 1969, Al Unser’s 1970, and Mario Andretti’s 1974 Dirt Champ cars.
| Season | Series | Event |
| 1970 | USAC National Championship | |
| Driver | No. | Entrant |
| Al Unser | 2 | Vel Miletich |
| Chassis | Engine | Car Name |
| King | Ford | Johnny Lightning “500” Spl. |
| Scale | Manufacturer | Collection |
| 1:43 | GMP | Dirt Champ Legends |
| Cat. No. | Quality | Rarity |
| 0233 | 
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Limited edition of 1032 pcs.
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