glhx said View attachment 1715408600 - View attachment 1715408601- These have the same part number. The taller one has teeth .0855 The shorter teeth. .0790 76 was the first year for the 4 forward clutch. The other one sitting next to it is a 67 with 3 forward clutch and shorter teeth for less frictions. The teeth on the 76 are the same as the 999. Because the 999 has a 4 forward clutch. But the 999 is a 5” gear and the 904 is 4.5” Click to expand...