Very hard to find 69 - 70 Shelby / 68 - 69 Cougar 4 speed shifter knob. These very rarely come up for sale used and when they do they are expensive. Correct for 1968-69 Mercury Cougar XR7 and 1969-70 Ford Shelby Mustang, all with 4 speed manual transmissions.
Ford part number C8WY-7113-C.
Check out our video on rebuilding your shifter below: