I'd agree with the two to three hours, other than having to get the driveshaft shortened and replacing the front yoke to fit. And then there's the electrical, powering the SV circuit, and routing and mounting the control button. Not a big job at all, and they make it very simple if one reads the directions. Just have to remember to change the fluid in the GV unit when you change the oil in the engine, for a long, trouble free life with a ten speed!