| 1 | 1968-12 |
J.D. McDuffie
J. McDuffie | 19 | 25 | 70 |  | McDuffie Racing | 237 | 0 |
| 2 | 1968-13 |
J.D. McDuffie
J. McDuffie | 19 | 16 | 70 | | McDuffie Racing | 125 | 0 |
| 3 | 1968-14 |
J.D. McDuffie
J. McDuffie | 27 | 19 | 70 | | McDuffie Racing | 98 | 0 |
| 4 | 1968-16 |
J.D. McDuffie
J. McDuffie | 14 | 15 | 70 | | McDuffie Racing | 122 | 0 |
| 5 | 1968-19 |
J.D. McDuffie
J. McDuffie | 7 | 8 | 70 | | McDuffie Racing | 281 | 0 |
| 6 | 1968-20 |
J.D. McDuffie
J. McDuffie | 20 | 9 | 70 | | McDuffie Racing | 276 | 0 |
| 7 | 1968-23 |
J.D. McDuffie
J. McDuffie | 30 | 7 | 70 | | McDuffie Racing | 463 | 0 |
| 8 | 1968-24 |
J.D. McDuffie
J. McDuffie | 10 | 6 | 70 | | McDuffie Racing | 191 | 0 |
| 9 | 1968-25 |
J.D. McDuffie
J. McDuffie | 36 | 37 | 70 | | McDuffie Racing | 1 | 0 |
| 10 | 1968-26 |
J.D. McDuffie
J. McDuffie | 18 | 19 | 70 | | McDuffie Racing | 127 | 0 |
| 11 | 1968-27 |
J.D. McDuffie
J. McDuffie | 17 | 9 | 70 | | McDuffie Racing | 284 | 0 |
| 12 | 1968-28 |
J.D. McDuffie
J. McDuffie | 9 | 15 | 70 | | McDuffie Racing | 123 | 0 |
| 13 | 1968-29 |
J.D. McDuffie
J. McDuffie | 28 | 19 | 70 | | McDuffie Racing | 195 | 0 |
| 14 | 1968-30 |
J.D. McDuffie
J. McDuffie | 29 | 10 | 70 | | McDuffie Racing | 463 | 0 |
| 15 | 1968-31 |
J.D. McDuffie
J. McDuffie | 16 | 10 | 70 | | McDuffie Racing | 184 | 0 |
| 16 | 1968-32 |
J.D. McDuffie
J. McDuffie | 10 | 11 | 70 | | McDuffie Racing | 226 | 0 |
| 17 | 1968-33 |
J.D. McDuffie
J. McDuffie | 40 | 40 | 70 | | McDuffie Racing | 4 | 0 |
| 18 | 1968-34 |
J.D. McDuffie
J. McDuffie | 11 | 15 | 70 | | McDuffie Racing | 159 | 0 |
| 19 | 1968-35 |
J.D. McDuffie
J. McDuffie | 8 | 16 | 70 | | McDuffie Racing | 62 | 0 |
| 20 | 1968-36 |
J.D. McDuffie
J. McDuffie | 19 | 25 | 70 | | McDuffie Racing | 56 | 0 |
| 21 | 1968-37 |
J.D. McDuffie
J. McDuffie | 10 | 12 | 70 | | McDuffie Racing | 219 | 0 |
| 22 | 1968-38 |
J.D. McDuffie
J. McDuffie | 11 | 11 | 70 | | McDuffie Racing | 239 | 0 |
| 23 | 1968-39 |
J.D. McDuffie
J. McDuffie | 44 | 42 | 70 | | McDuffie Racing | 22 | 0 |
| 24 | 1968-40 |
J.D. McDuffie
J. McDuffie | 10 | 18 | 70 | | McDuffie Racing | 121 | 0 |
| 25 | 1968-41 |
J.D. McDuffie
J. McDuffie | 13 | 28 | 70 | | McDuffie Racing | 12 | 0 |
| 26 | 1968-42 |
J.D. McDuffie
J. McDuffie | 14 | 8 | 70 | | McDuffie Racing | 283 | 0 |
| 27 | 1968-43 |
J.D. McDuffie
J. McDuffie | 13 | 15 | 70 | | McDuffie Racing | 85 | 0 |
| 28 | 1968-44 |
J.D. McDuffie
J. McDuffie | 23 | 16 | 70 | | McDuffie Racing | 465 | 0 |
| 29 | 1968-45 |
J.D. McDuffie
J. McDuffie | 26 | 30 | 70 | | McDuffie Racing | 1 | 0 |
| 30 | 1968-46 |
J.D. McDuffie
J. McDuffie | 12 | 9 | 70 | | McDuffie Racing | 184 | 0 |
| 31 | 1968-48 |
J.D. McDuffie
J. McDuffie | 31 | 35 | 70 | | McDuffie Racing | 95 | 0 |
| 32 | 1968-49 |
J.D. McDuffie
J. McDuffie | 22 | 13 | 70 | | McDuffie Racing | 184 | 0 |
