Even if find a place that has seats, they most likely wouldn't have one for your bike. Word of mouth and other reviews are about the best you could do. What exactly are you looking for in a seat?
I guess I am not exactly sure. My issue is after riding for maybe 30 min, my lower back will start to hurt and my tailbone even seems to go numb. Not sure if that is something a different style seat would help or if it is something that I will eventually get used to