Well, I just ordered the parts that I think will get me to the top of a snorkel for the fuel side of the engine. I plan one a riser pipe going up the back, center of the box and then a 90 degree turn into the top of the cab area with a filter at the intake end there. All, 2.5" pipe and connectors. NMK, inside of your primary air box you were using a UNI that had a rounded top that had the red foam covering the entire black internal filter. Can you remember what the filter number is for that style filter? That's the style I want to use in my air box. Thanks