I have a great condition original airbox for sale on eBay if anyone is after one..
https://www.ebay.co.uk/itm/112967146547?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1558.l2649
https://www.ebay.co.uk/itm/112967146547?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1558.l2649