B&M MegaShifter Boot 5000201 a set screw is also

a set screw is also machined flush on the bottom

Console MegaShifter is designed to fit the console of a 1968-1969 Chevrolet Camaro

GM Alternators

while the built in SFI 3

B&M MegaShifter Boot 5000201 a set screw is alsoFits various B&M shifters Sold Individually Rubber Shifter Service Parts Product Description: Shifter Boot Replacement Rubber Black B&M Mega Shifter Sold Individually B&M specializes in performance automatic transmissions, torque converters, SFI approved flexplates, legendary automatic shifters, precision manual shifters, and many other transmission products including cast deep aluminum transmission pans, transmission coolers, and automatic