I replaced the OEM shocks on my 8000 lb F350 about five years ago with KYB gas shocks. We use this truck to tow a 18,000 lb loaded race trailer throughout the southwest US exclusively. We have never had an issue and the ride is great with or without the trailer hooked up.
I'm not sure what K&N is offering for reusable oil filters but we use reusable spin on filters for our race cars and have for years. For these cars it allows for accurate oil performance analysis as well as indications of engine wear and potential failure. The one time price difference can be...