Standings
constructor-gts
| Pos | Teams | Points |
 US
|
US
|
US
|
US
|
 CA
|
US
|
US
|
US
|
US
|
US
|
US
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Ford | 121 | 14 | 21 | - | 7 | 10 | 13 | 7 | 8 | 8 | 17 | 16 |
| 2 | Chevrolet | 102 | 18 | 9 | - | 14 | 13 | 16 | 4 | 10 | 6 | 7 | 5 |
| 3 | Ginetta | 94 | 12 | 13 | - | 12 | 8 | 8 | - | 4 | 13 | 14 | 10 |
| 4 | Maserati | 47 | 5 | 9 | - | 4 | 6 | 1 | 10 | - | 5 | 2 | 5 |
