there are a few test of oil filters online, some of frams were found to cause oil pressure issues, mainly the cheaper ones. Read up or google it.
For a little bling on the air filter, I use a circle track filter that is re-usable and screws apart easily. I like the idea of being able to clean or check the filter if I am having an issue on the trail.
edelbrock sells a nice unit for under 30 bucks with an fitting on it..
Things I have learned on fuel filters and lines, Don't use a rubber line in between the carb and fuel pump..use a quality line or factory hard line. Also don't use one of those cheap glass filters the spectra brand..asking for trouble!