This is what I built its a piece of 4in pipe witha k&n filter on the end of it and I just cut the stock breather tube for the elbow.

 

I got one like got a sol. with the cut elbow like sweetv8s10. although I reused my factory element for the time being. My only down side was my wiring got between it and the wheel well. Pretty sparks Not. I love mine. I just need the bigger element and don't have the 70.00