YES, I have done it, Into my 1951 Chevy 1 ton truck with 1958 Chevy 235 engine, SM420 transmission, from a 1970 Chevy 3/4, V8 engine and Automatic Transmission rear gear with 4.11 ratio. IT WORKS as advertised! You pull the axles out about 3 inches each side,Unbolt and Remove old 5.14gear set onto floor jack and Raise new 4.11 up and bolt into place. Add gear grease, Have a Beer or 3 and go for a cruise in the Left Hand lane. I have driven 70 MPH measured on GPS and still had some pedal left unused. BUT Is your Steering Up To It? Brakes? Can you live with Speedometer being inaccurate or are you willing to buy the adapter? Do you have 3 point seat belts? All of these questions become Much More important when you run an A D truck at these speeds. I must admit, I do have some work to do ! Now Get out there and beat the bushes, These Eaton HO 72 gear sets are available BUT you wont find them driving the Interstates! I do have pictures on this computer somewhere of a 4.11 Eaton gear set and the P/N on the side of the ring gear
Keep us in the loop . Jerry
