Bushings are sized by the ID. the OD is the same.
Frame holes are 1/ 2" till about end of October, then 9/16"
So if a 3/4" wrench fits the bolt, you have the older, smaller style which is 1/2" . If a 7/8" wrench fits, you have the 9/16" bolt, which is the bigger and most common 73 style.
__________________
"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather
|