while fixing a fork seal leak today I discovered some part interchanges I wanted to share.
The 39mm Showa fork shares both the oil seal and upper bushing with all sportsers made since 87. The seals Lewisport sent me were an All Balls 55-113.
After I got the old seal out I saw that the upper bushing needed to be replaced. I found a bushing at my local HD dealer part number 45461-87. Only $5.50 too!! Now I can ride this week