air filters

I am looking to get pod air filters for my '79 xs400. Im specifically looking for K&N filters, the folks that have run them what are your thoughts and as well what model# did you get and how was the fit? Thanks Peter

Hi, I have 81 xs400se and since stock air filters are very expensive in my location, I'd like to modify the original ones. The foam on them was damaged beyond repair so I'm looking for a solution to replace it. Do you know what material can i use that is rather common? Here's a photo of stock...

I am rebuilding 3 1982 Yamaha heritage bikes. These sport wire wheels, and drum brakes in an attempt to "look" like the old school Triumph Bonneville. I would like to take it a bit further with the Triumph type air filters, and the Burgess mufflers. I can get Emgo Burgess mufflers far cheaper...