Ercoupe 415C shielded ignition cups, no cowl bumps

I like the cowl bumps. They are in keeping with the art-deco design philosophies of the 30's and 40's but I know some people like to get rid of them for various reasons. I am curious, what do you plan to do with the holes left behind?

I have seen upper spark plug cups for shielding old style massive electrode spark plugs on several Coupes. My first Coupe had them and I looked at a D model that had them. My question is, where do I find a set for purchase. Those cowl bumps are not attractive.