1981 50HP Mercury Project Help

[badger111]

I'm nearly finished a complete rebuild of one of my early 80s Mercs. It's been painted, I had the decals shipped over from Peter at North York Marine (http://www.nymarine.ca/) I can start to see what it's going to look like when finished. However, I can't seem to find anything suitable for the tilt tube end caps!!!
Does anybody know of something, somewhere thats a suitable replacement..

Many thanks
Lee