Re: air box modification for 99 summit x
The to Summit X's in the Snowest dealer shootout posted very close results, but I believe they actually gave the "King of the Hill" title to Tom's Snowmobile Service. Not that that classification from Snowest means anything. If you reviewed the specification tables it is pretty apparent that Snowest mixed up the modifications that Weller and Tom had performed.
Since you also from Alaska, you might get a more useful calibration from Tom who is located in CA and may deal with riders from lower altitudes more often than Weller who is in Utah.
Tom sells widening kits and Fox shocks too. He can be reached at 530-862-1128.