For the mfr, these clearances are probably irrelevant, since the intake is a "closed" system and the overall design takes priority. I think even with the Flex, the clearances are more than the SHO. For those of us modifying the intake system, it is a challenge that needs addressing.
Airaid used to ship the taller blade upon request initially for free, now they charge $20 if after the fact IIRC. I don't know if they would send the taller blade upon request with a new system in addition/exchange. Probably still not tall enough for the X, BUT it would give you a stiffer base to add the foam onto.