Everything you need can be found on ebay. I have learned that the smaller the scale number the bigger the bike is.
1:6 scale are the two bike ones all the way to 1:36 scale are the smallest ones. 1:12 and 1:18 are the most common ones.
I have a pretty big entertainment center with a 55" TV that gives me enough room for display. I'm looking to change it soon...too cluttery. I think I'm going to line a shelf along the perimeter about a foot away from the ceiling and line them all up.
It is my little obsession. Thanks for the comments everyone.