The sealed unit, I'm sure someone will correct me now, but I'm sure it's the same as the S13's if that helps.

the mk2 's are the same as the s13's but the mk1's are different

whats the difference mate ? is it the style of the lense ?.

the mk1 has a flat lens and the whole thing is held in by the light protecter bar where as the mk2 is deep at one end and is only held in by a metal strip that goes round the lens:)

Sorry I haven't got back to you sooner
http://i12.photobucket.com/albums/a2...E3MzMuanBn.jpg

These any good to you, or have you got sorted now?

hey managed to get one sorted, thanks anyway mate :)