i wouldnt get oe reeds, go for the v force, around $130. or just upgrade with some carbon fiber reeds for the stock cage.

http://www.ebay.com/sch/i.html?_trksid=p2050601.m570.l1313.TR0.TRC0.Xlt500+reeds&_nkw=lt500+reeds&_sacat=0&_from=R40

and the fuel cell on that carb look small, i hope it does not run out of fuel when your on a long pull. but it looks pretty nice.
good luck with it, and i hope it works good for you.