Getting ready for a new riding season. I have a 2008 FXSTC and I've put on 23,000 miles. Planning a trip to Sturgis this summer, 3600 mile round trip. I'm wondering if anyone has exchanged the stock seat off the Softail Custom with a Mustang Seat. If so, which one. It needs to have the two bolts that fit the sissy bar. Any information will be appreciated.