Servicing Maryland's Frederick County for more than 38 years with ASE Certified Technicians. Let us be your full service Auto Repair and Maintenance shop. We are the go to installer of Jasper Engines and Transmissions. Servicing Maryland's Frederick County for more than 38 years with ASE Certified Technicians. Let us be your full service Auto Repair and Maintenance shop. We are the go to installer of Jasper Engines and Transmissions.