Andy, how is the clear top going to be sealed to the rest of the valve cover? I can't tell if you have some sort of gasket in there and don't see any signs of an o-ring or groove.
I will/would be interesting to see in there while the engine ran.
MD, here is a final picture. There is a gasket between the aluminum body and the lexan and then there is a SST beauty ring that fits over the top. So it is a four piece assembly.
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