has your friend considered whether he plans to sell the bike? it
won't fetch more than half its value after one year....
properly modded and jetted, it's a very good bike. good pickup and
handling. if he fits on a full arrow system, all the better. but
there's TP to consider... if it's just a plain "arrow-in-milo" mod,
go easy on the left corners... 
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rock hard... ride free...