I don't mean to destroy anyone's state of mind, I did say it was geat workmanship!
I'll rephrase my critique on the vents. "I don't like them at all." the beauty of early bays is all the curves, the later jobbies went all geometrical and angular.
I would also like to see the evidence of them working better then the OG vents too. In their location down there they would be an obstacle ot hips and any other bodily part that got in their proximity.
Just my opinion of course and I don't for a moment think I have a mortgage on taste.
David