This is the ad I meant to try. You can have them send you a ohoto of the head to see if it has letter. Pay direct to shop with credit card. Easy to reverse charges this way.

Claim to be nos, call ask if there is any letter on head and what it is. If there is any letter it is nos. phone 780-963-2999
29.00 +7.00 ship they have other valves

http://www.ebay.com/itm/HONDA-NOS-EX...item483d6ff486