LimitlessDiesel.com Sponsorship – We at Limitless Diesel specialize in the customization and rebuild of Allison transmissions. We incorporate the best parts available, including some of our own proprietary parts. Our company is striving to build the strongest Allison transmissions in the industry. Our record holding Allison transmissions prove our dedication to provide the best built transmission possible. We are located in Dalton Massachusetts, but our products reside in trucks across the country.