Hey, I would go with the O.S super air cleaner (2 elements).
It is really safe for your engine. If the top gets dirts, you have a clean one below it.
Peter
P.S. I run them on all my cars.
that is a good filter - also the Moter Saver filter is great, that is what i use. If u go to the local track u will find that about 99% of the driver are using either the filter i use, or the one somers does.
I have one problem with the motor saver. because it has that metal mesh on the outside, that tends to get some oil on it from the foam and clogs up pretty quick and cleaning it sometimes takes some work. Other than that, I love them. that is all I use.
mjime - i have noticed that problem too, however i am able to alleviate it by spraying a small burst of nitro cleaner in the element afte each run, only takes a second, and prevents that from happening!