I've seen a bit of discussion on here about replacement/spare filters for VCM OTR's, specifically for the VE/VF V8's. What I haven't seen verified is the K&N part number for the filter. There is a number stamped on the filter supplied with the VCM intake - SP-3463; but this doesn't seem to be a K&N part number. The closest K&N match (using dimensions) that I found is a 332591 that is the same length and width but approximately 1mm more in height. I would imagine that the 1mm difference (being part of the rubber seal) would compress easily when fitted. Has anyone used this filter in their VCM OTR or is there a different one that fits? ...btw the 332591 is for Porsche 928's update: I've just noticed that the Supercheap website description for a K&N 332591 filter claims Porsche and VCM intakes! the annoying thing is - you have to know the part number to find the description, a search for VCM, for example, won't give you a hit.