yeah man, FA50's are fun little bikes. I had one for 3 or 4 years. Parts aren't that hard to get, they are just a bit expensive, and as Zeke put it, there are some upgrades for it. Sparse would be an understatement though.
I had mine going 30-25 stock. That was about that fastest I've ever seen one go that wasn't upgraded at all.
I sold mine for $150