i dont agree......well i do to a degree...get the suspension set up and the brakes then if you can afford to get 70+ rwp why not.............sure 66 is easily acheivable as has been shown by most of the 620ies on the grid, if you can get 70rwp and you can afford it why not give your self every advantage you can........
Of course the rider has to be able to exploit the gains for them to be worthwhile otherwise they become redundant..........
Phil
ps..if i had the money i would eek every bit of BHP i could..........