I noticed that there are different types of SERTs. H and G versions. Does anyone know what the differences are and which would I need for a 2008 Street Glide?

 

You'll need the 32107-01H version to get 08 touring maps.

 

These are updated every year, so you'll need the most up to date one for the 2008 maps. I've heard stories that trying to load with older software to the 2008's have been causing problems. Specifically, partial uploads and freezing up the software. Someone correct me if I'm wrong, but I have the -J version, which I think is the most upto date software version. Anyone know for sure?

 

32117-01J is the January 2007 edition of the CD, software version 4.6.2, and does not have model year 2008 maps.
32117-01L is the latest CD, software version 4.7.6, and has the model year 2008 maps.