motorbikes, "honda cb450r"

so i stole these form another blog awhile ago, and i hella fell in love witht hem i would really love to build soemthing like this, is there any of these bikes in america? where would i buy that seat and gas tank, i have found like that wind screen and even a belly thingy majiggy, but i havent seen taht gas tank or that seat which are basicly my favorite parts, any info will be much appreciated.

oh and about the tags for this post lol, me and yuta were experimenting to see who could get more hits by using tags, and this is a pretty weak attempt,but yeah lol.