- ARD Engineering
- ARD Engineering
- Bunting Magnetics Co
- Case Oilfield Svc & Supplies
- Chris Strausser & Dad Rentals
- Dugas Ignition Svc
- Gerhardt's Inc
- Gerhardt's Inc
- Gulf Coast Ignition & Controls
- Headway Technologies Inc
- Hunt Magnetos
- Liberal Magneto Co
- Mag Shop
- Mitch Ford Magnetos
- Rob's Magneto Svc
- Roy's Magneto & Electric Svc
- Thortsen Magnetics Co
- Tink-Au-Wink Magnet Shop