2008 FLHTCU wheel sizes and brands
 

I am curious to know, how many have you guys switched wheel sizes on your FLHTCU bikes? I have been told that I could fit a 21" front wheel on these bikes?
My dad might be handing down his 105th anniversary Harley Electra Glide Ultra Classic and I was wanting to start looking at aftermarket wheels. What's a good website for aftermarket wheels and tires?
Any suggestions or recommendations on sizes and brand of wheels would be appreciated. If you would want to comment back and attach pictures of ideas, that also would be helpful.