Originally Posted by HillBillyDelux555
I dont know about that, I'd got with the aFe Stage 2 w/ Pro Guard 7. I got a buddy that runs Diesel Performance Enhancement he said the best for the Early 99's is that. Another plus is it looks monsterous under the hood (Pro Guard 7 is the big air filter), it makes a cool, loud whistle sound too....
ProGuard 7 is the type of filter, there is also the standard media and the New ProDry... They are all the same size, the standard media has a inner filter on the end which increases the surface area. They all fit on the Stage 2 system...
I run the standard media, after 200,000 miles and no dirt issues I prefer the added flow over a little better filtering.