The old exhaust mount runs through the swing arm mount, on a huge (inch an 1/8 - I'm guessing) bolt. If I take this off - do I need to put soime kind of a spacer in its place & how the heck do i get the bolt out?

My friend has a Harley swing arm frame from the late 50's early 60's for sale and my husband is trying to list it for him cuz he is pretty computer illiterate. If you know of another site, preferably free, that we can list it on that would be great.