Tennessee Diesel Conversions (TDC) is owned and operated by Scott Oswalt, and offers diesel performance parts and services, with a focus on personalized service. TDC appreciates the pride associated with owning a diesel powered truck. A diesel engine provides efficiency, performance, and torque. If you are looking for speed on the street or torque on the trail, then look no further. TDC continuously monitors performance in the marketplace to ensure success with the latest technology.