I previously had the full size duramax fan on a cut down factory shroud, but the stock air cleaner boxes have a habit of breaking apart on the 96-2000 vans. So I swapped to an 01-02 fan shroud and Donaldson designed box with a custom 4" air intake and 100mm MAF. The Duramax blade had to be trimmed from ~21" to 19" to clear the shroud. The air box nearly completely hides the engine and when the mile long oil fill tubes and dipsticks as well as the coolant bottle is in place it looks nearly stock
