I'm on my phone and can't be ar$ed to search but there is a guide and a sale thread, just PM rtBiscuit I think it's £35.... Takes 5 minutes and overnight to cure the sealant, trickiest thing is getting the box out in the first place really...
It a little bit of metal that converts the old airbox to the standard of the newer one, would be well worth checking out with those other mods you have
There was a young man called Cragus,
He has often offered to tea-bag us
He once had a Zed
But knocked that on the head
He will probly end up with a Brabus...