I'm selling this on ebay - it was on my MG ZS 180, but it's just occurred to me that it would fit the Maestro/Montego O series engine. Take a look here:
http://cgi.ebay.co.uk/ws/eBayISAPI.d...MESE:IT&ih=012
http://cgi.ebay.co.uk/ws/eBayISAPI.d...MESE:IT&ih=012