See through valve covers?

I see that the clear valve covers are available for the chevy guys. Is there anything out there for us Mopar guys? I was considering just making my own from a set of used aluminum covers. I figure they would work best as the design on them is much straighter. I'm sure that one of us has experimented with this concept. Experience and failures welcomed.
It may have cool factor but I have never went for that. They do have clear distributor caps if you want those.