Yeah... It would be nice to have for 20V too.. but the only way now is to DIY a transparent window.
Btw, try imagining how cool it would be to have a transparent valve cover as well... I think Lexan should be able to withstand the heat... but not too sure about it.
Helping a friend to post his items for sale. Kindly PM for best offer. Please note items are all in mint condition. Very well taken care of and in perfect working condition.