This is a mod that has been out there for years and its super easy and quick just hate I waited this long to do it. It helps with better shifting when installing an aftermarket shifter. P/N: 65277 Copper Washers Socket: 12 point 15/16" Anti-Seize Compound Torque to 30 ft/lbs per Ford Manual. I picked up a pack of two copper washers P/N 65277 for $7 shipped off amazon since none of my local auto parts stores had any. If you can get them from your store they are less than $2. The Shift Detent bolt is towards the back of the transmission on the passenger side. It is a 15/16" socket. Using a 12 point made it easier: We removed it and cleaned the threads. This is what it looks like: Here are the two copper washers placed on it before reinstalling. We put anti-seize on it and torqued to 30 ft/lbs per Ford Manual. I have to say it is a really nice mod and the shifter does feel much better.