GOS Performance

Located in the heart of the Rocky Mountains, we are your # 1 source for Ford Cummins conversions and Allison transmission conversions! We manufacture and sell the best conversion parts in the industry, with no middle man involved. We are your direct source for Cummins conversion parts. Here at GOS you can rest assured that the product you purchase is the best money can buy. Customer service is our #1 priority before, during, and after the sale, which is why our technical support team is second-to-none. We have been performing Cummins swaps since 2001. What does this mean for our customers? Unparalleled support, period. Need help with torque specs? We have the answers. Need help with proper install procedures? We have the answers. It doesn't matter if you are a do it yourselfer, a seasoned vet or a service repair shop, if you can't find the part or information you need? Please call us at 1-800-620-4467, or e-mail us at sales@gosperformance.com