I purchased a used 2008 150th Anniversary FLSTC with 4600 miles and it appears to have the Stage 1 upgrade kit. The filter looks to be a K&N type filter and I want to know; 1. If it is a K&N filter 2. Does it require the same cleaning and oiling like standard K&N filters. 3. Where is the best place to get the K&N filter kit? Your help and any suggestions is greatly appreciated.