| Au Grattan 2003 | ||||||||||
| Vintage Race A | ||||||||||
| Finish Position | Car # | Name | Laps | Lag | Fast lap (seconds) | Speed | Class | Class pos | Car | Hometown |
| 1 | 20 | Dave Burton | 15 | 93.43 | 75.343 | 2C | 1 | 64 Porsche 356 C-Silver/Blue | White Lake MI | |
| 2 | 60 | Rick Gurolnick | 15 | 28.754 | 94.643 | 73.862 | 2C | 2 | 60 Porsche 356 Roadster-Ivory | Hawthorn Woods IL |
| 3 | 202 | Brad Thomas | 15 | 44.223 | 96.069 | 73.088 | 2A | 1 | 65 Austin Healey 3000-Green | Rock Falls IL |
| 4 | 15 | Richard Reynolds | 15 | 44.705 | 95.69 | 73.064 | 2B | 1 | 62 Volvo 544-Blue | Grand Rapids MI |
| 5 | 122 | Jeff Babcock | 15 | 53.329 | 96.747 | 72.641 | 2B | 2 | 68 Volvo 122 -White/Red | Chicago IL |
| 6 | 10 | Charles Foss | 15 | 01:01.0 | 95.451 | 72.266 | 2C | 3 | 62 Lotus S7-Green | Fremont OH |
| 7 | 193 | Ray Freiwald | 14 | -- 1 lap -- | 101.641 | 69.92 | 2B | 3 | 61 Volvo P1800-Blue | Janesville WI |
| 8 | 44 | John Hornbostel | 14 | 14.372 | 101.727 | 69.23 | 2B | 4 | 62 Triumph TR3B-White | Toledo OH |
| 9 | 29 | Gary Hershoren | 14 | 34.532 | 103.59 | 68.284 | 2B | 5 | 63 Volvo 122-Cream/Blue | Farmington MI |
| 10 | 51 | Jim Holody | 14 | 51.274 | 103.182 | 67.519 | 2C | 4 | 59 MGA Twin Cam-Glacier Blue | London Ontario |
| 11 | 79 | Donald Brick | 14 | 56.342 | 104.208 | 67.29 | 2B | 6 | 62 Triumph TR4-White | Bettendorf IA |
| 12 | 38 | Rich Conklin | 14 | 01:09.4 | 101.526 | 66.71 | 2A | 2 | 53 Jaguar XK120-Green | Long Beach CA |
| 13 | 111 | Marilyn Gaunt | 13 | -- 2 laps -- | 107.919 | 64.673 | 2B | 7 | 56 Morgan +4-Black | Indianapolis IN |
| 14 | 47 | Bill Dentinger | 13 | 46.935 | 107.645 | 62.641 | 2B | 8 | 59 Tornado Thuder Bolt-BRG | Waukesha WI |
| 15 | 43 | Rick Cook | 12 | -- 3 laps -- | 96.811 | 58.41 | 2C | 5 | 63 Lotus S7-Yellow | Dewitt MI |
| 16 | 4 | Bob Wismer | 9 | -- 6 laps -- | 108.065 | 63.632 | 2B | 9 | 62 Triumph TR4-White | Moline IL |
| 17 | 21 | Roger Mikulas | 7 | -- 8 laps -- | 105.801 | 64.398 | 2B | 10 | 65 Morgan Plus 4-Burg/Black | Clarkston MI |
| 18 | 7 | Mike Fisher | 2 | -- 13 laps -- | 113.158 | 54.188 | 2A | 3 | 60 Austin Healey 3000-White/Blue | Lk. Leelanau MI |
| 19 | 64 | John Wiley | 0 | -- 15 laps -- | 0 | 0 | 2B | 11 | 61 Triumph TR4-Red | Monclova OH |
| 20 | 76 | Steve Bonk | 0 | 0 | 0 | 2X | 1 | 73 Datsun B210-White | Prospect Hts IL | |
| 21 | 77 | George Olsen | 0 | 0 | 0 | 2A | 4 | 60 Austin Healey 3000-Black | South Barrington IL | |
| 22 | 95 | Tony Drews | 0 | 0 | 0 | 2B | 12 | 63 Triumph TR4-Red | Moline IL | |
| 23 | 41 | Raymond H. Nichols | 0 | 0 | 0 | 2X | 2 | 71 Alfa Romeo GTV-Red | Kent OH | |
| 24 | 59 | Jack Drews | 0 | 0 | 0 | 2B | 13 | 61 Triumph TR4-Blue | Geneseo IL | |
| 25 | 101 | Thomas Vinje | 0 | 0 | 0 | 2X | 3 | 57 Eastlake Eleven-Green | Sterling IL | |
| 26 | 163 | Rick Dunleavy | 0 | 0 | 0 | 2C | 6 | 63 English Ford Cortino GT-Blue/White | Brookfield IL | |
| 27 | 35 | Gary Armbrecht | 0 | 0 | 0 | 2C | 7 | 58 Porsche 356A -Silver | Grand Rapids MI | |
| 28 | 27 | George Hovsepian | 0 | 0 | 0 | 2C | 8 | 62 Lotus 7 -Silver/Yellow | Lake Zurich IL | |
| 29 | 2 | Lane Mally | 0 | 0 | 0 | 2C | 9 | 65 Porsche 356-Yellow | Birmingham MI | |
| 30 | 3 | Marc Noordeloos | 0 | 0 | 0 | 2X | 4 | 71 Alfa Romeo GTV-Orange | Grand Rapids MI | |