well this seems to be something without a whole lot of input (RARE FIND!!

I had a Donaldson PowerCore filter in my 2010 Duramax before I sold it and I loved the thing... all my investigation during my Dmax modding days indicated that the STOCK box/filter/tubing was superb up to the mid 500's HP range... with 6.6L of displacement running high RPMs... so I think that with a nice big filter from Volant a Mild to Moderate twin system should be able to breath with ease.
