hello,
the speedy spares part number is AP17/VFA152. I may have one "in stock" if you need it. Halfrauds won't have the K&N, I'd recomend just ordering one for nexttime (there is a link somewhere)
I love that exhaust and have already been toying with the idea of doing something similar.
The air filter looks interesting - what kind of fan is it? I have a few powerful pc fans kicking about which could be bodged into something similar.....