Need some advice.

are you gonna be racing this ????
if not 400ex, 450r and trx250r are all viable options for the back, which i have a few extras, pm me if interested
 
do you have the loot, and ride hard enuf, to warrant a couple grand in suspension ??
 
If you're lookin to test and tune, NCMP is the place to be. I don't know if they're quite up to planning GNCC races there but if they keep improving the place, they might!