Like this on ebay, but its for the Subaru, Bought for my 2003 WRX, will fit a STI. Defo all newage unsure about clasic but i cant see why not.. got it from revolutions

I Bought this yesterday and fitted yesterday, sounds great, Only reason i decided to put the standard airbox back on is im not going down the FMIC route any more and i for got i boght a panel filter;-) cost me £150

£120 with postage, willing to take a sting, ideal xmas pressy, comes in box with full instructions, ducting, filter, MAF holder, pipes, clips cable ties


Its brand new,
eBay.co.uk: K&N REPLACEMENT FILTER APPOLO RC-5051AS UNIVERSAL FIT (item 280059608214 end time 21-Dec-06 11:08:53 GMT)

 

Its a good bit of kit a mate of mine had an apollo on his clio 172 and it gave 6 bhp