| Business | Phone |
| Advanced Design Concepts N27w23655 Paul Rd, Pewaukee 53072 | (262) 523-1010 |
| Czarnecki Engineering Inc 1099 Quail Ct 100, Pewaukee 53072 | (262) 691-1010 |
| Powertrain Engineers Inc W293n3819 Round Hill Cir, Pewaukee 53072 | (262) 369-0256 |
| Langhoff Engineering N23w30565 Golf Hills Dr, Pewaukee 53072 | (262) 369-5850 |
| Matsen Ford Design Assoc Inc 325 Forest Grove Dr, Pewaukee 53072 | (262) 691-2900 |