I think that seat is the Victor/hairpin style from Rideable Replicas, item 6620: http://www.hiwheel.com/parts/index.htm
And the others are right, there is not really much BTR about that bike. It is a nice, clean cruiser, though!
Enjoy reading and learning, I do the same when I join forums. I spend more time searching through this forum than reading new posts, lol. So much to learn and the search engine is great.
Once again, welcome!