WOW. Now that is low mileage. Must have original tires, everything.
Sounds like you don't drive much at all if you sold an 04 with 43000 miles. Let me know when you are selling this one! It'll have about 9000 miles by then. hahah
I think we need some pictures of this beast. As far as what to look out for, there shouldn't be much with that milage. There has been air suspension, and regular suspension issues, but aren't always there.
2007 LS 460 SWB Smoky Granite Mica
2010 HD Tri-Glide
2000 HD Wide Glide