Dirt cheap 520 conversion kit
 

http://cgi.ebay.com/ebaymotors/RK-Vo...item4a9ed39215

While this is not the most high-end conversion kit (chain is a XSO model) and the drive sprocket is 14 teeth (rear is 43, however), the bidding is only $25!!!!!

Here is an info link about the kit's make-up:
http://www.rkexcelamerica.com/street_rk_honda_kits.html

scroll down to kit p/n 1062-918R

cheers

P.S. I would buy it but I just bought another (slightly better one, has GXW chain) for $85 (still in box).