In thumpers people are mad to open the air box up, to let the motor breath freely... Anyway, what is wrong with some bugs on the filter?
It would be interesting to know your honest opinion on the longer suspension. I sill run mine 35mm higher than stock, for a year now, but thinking really hard of getting to the stock level. If the surface is leveled but rutted, yes I do feel its advantages, but my rides are mountains of BC, on steep elevations/descends I definitely prefer lower COG.