Who makes custom oil tank inserts?

I have made several for people, here's mine and the one I recently made for Skip:





What did you have in mind?
 
Since i don't have the 2300cc small emblems on the sides anymore and a lot of people looks for something to tell what size it is, i would like to have one that says "guess"
How about it Lonnie? what will it take to have one done? i'm willing to go there and clean your wheels
 
I have a secret formula to clean wheels