This list was from 2003 so take it with a grain of salt, but may still be somewhat accurate.
Mimis Sunoco
29372 Grand River
Farmington Hills, MI 48336
(248) 474-2790
Speedway Store #2201
7 Mile Road & Newburgh
Livonia, MI 48152
(734) 464-3913
Speedway Store #2290 Sold as CAM2 = Sunoco GT 260 100 Octane Unleaded - Rick
880 E. Maple Road
Troy, MI 48083
(248) 585-6414
Speedway Store #2358
5596 Lilley Road
Canton, MI 48187
(734) 981-5030
Speedway Store #2376
4060 17 Mile Road
Cedar Springs, MI 49319
(616) 696-2666
Speedway Store #3593
103 South Scott Road
St. Johns, MI 48879
(989) 227-1331
Speedway Store #8763
1435 East Hills Road
Grand Blanc, MI 48439
(810) 695-1909
Speedy Q
910 South Main St.
Lapeer, MI 48446
(810) 664-5831