I agree those pictures show a very nice "work in progress" but I really want to see the "after" pictures...
The only "working" roots blower application I have seen was on the Concept Contour.
One small low res picture that makes you go. WHY DIDN'T YOU BUILD IT!!!
2000 SVT #674
13.47 @ 102 - All Motor!
It was not broke; Yet I fixed it anyway.