I don't know that there is bushing in the forks besides what you have on the axle. If the bike has lower miles, replacing the oil seal should be fine. If higher miles, maybe also the dust cap, and if you are stripping it down all the way, maybe the washers at the very bottom. Before I recently did mine, I did not notice others replacing more parts than these with the exception of the springs.
are the seals leaking ??
if not take top off forks pour and pump oil out and replace with fresh
just a thought
Good point Paul65.
When I got my bike it was 16 years old and even if the previous owner thought it had been done I felt it was good insurance to go ahead and have it done. Once the forks are off, I had thought why not but it feels like you already more than half way there. The tool that I made to separate the forks cost about $10 not including the drill bit, drill, and hand tools that I already had. The separating of the forks was not that bad. The hardest part for me was getting the new seals on which was my own doing as I did not want to spend the bucks for the correct tool and ended up making one instead. However, it's nice when riding and you know what's between your legs.