header rail seal retainer

["Dave G." <dmg@bossig.com>]

I need to get a replacement header rail seal retainer... the metal bit 
that the rubber seal fits into... I went to the fit the rubber seal 
only to find that the PO has buggered this one up  --- which is why 
there was no seal at all !!

Which one should I get that will work... the one from Mo$$, the one 
from Vic Brit, Or ????

Thanks
Dave G.