K&N's are OKish in non dusty enviroments but I would not put one on mine especially if it was used in a dusty enviroment. But its your engine. Search on some of the Dodge sites they are not highly regarded.after all this, i think i will use a land cruiser air filter box. i have a k&n element to go in. it will be cheap to buy, and i will monitor the performance of it with one of those little doodads that tells you when the filter's clogged.