Illmatic, look through both my 1953 and 1955 projects. They both have Wayne's grips, as will the new 1959/1960 Sportsman that I am working on.
The throttle parts that he sells are just like stock, except thicker steel, so he does not include the reinforcement insert, part # 770, as it is not needed. My suggestion with his throttle setup is to run a sanding roll inside the rotatable tube, part #762, to clean up the machining a little. This makes it work like butter!!