The enclosed Scoop filter offers many advantages over open filters - the main being the fact the scoop shields the cone from sucking in warm air from the engine bay and lossing performance more commonly know as Heat Soak.
The original Green item was developed in conjuction with the Citroen Sport team. The RaceLand item is a good value for money reproductio of the Green item and can be had from
www.kam-racing.com for a little more money they will put a Green cone inside the RaceLand scoop which is a much better quality item that the RaceLand cone.
Contact Kam-Racing and get them to quote the correct price as they offer a discount for Saxp members
Its worth mentioning, on fitting the RaceLand item you will need to move the power steering bottle slightly to the right towards the headlight as the scoop does not allow for it but its an easy mod to do and loads of people have done it.
Go for it Im sure you wont be dissapointed with it