Extreme Transmission Builds – For Allison Performance Vehicles 1000 Contact us to arrange your Extreme Transmission Order Now! Sounds Awesome! About Us Home Fitting Agents Newsletter Terms and Conditions Privacy Policy Contact Us Trademark Acknowledgement Products Nomad Valve Body Extreme Valve Body Full Manual Valve Body Torque Converter Lockup Control Transmission Temperature Gauge Kits Manual to Automatic Conversions Compushift Transmission Control Systems Services Automatic Transmission Servicing Ask Orto Technical Questions and Answers Re-Manufactured and Changeover Transmissions Extreme Transmission Upgrades Custom Heavy Duty Billet Torque Converters Get Zip Finance – Own it Now, Pay Later!