I got you logged in
I am one in the same. Norbert is a great guy. I've known him for about 5 years now. He has some awesome cars. If you get to go to VIR, ask for him as an instructor. He an his brother have some of the fastest lap times at VIR. He might be old and sound a little country, but he can get it done. I am interested in your diffuser project. I actually have my own diffuser project under way. I expect it will be next spring before I can get it completed. I have blown two engines in the last 8 months costing me a lot of track time and a lot of R&D time. Hopefully I am over that now. I think you can see my diffuser build under my profile if your interested.

I paly around with VW beetles too. I have a 1979 super beetle convertible capable of 140 mph. with a vw engine ( not stock obviously)
Cheers
Roger

BTW, My phone number is 252-945-0254, my name is RYal Watkins.I believe that You are the same Roger Brooks that used to build the boats? Ive actually been wanting to contact you to see if you may be interested in making a mould from a diffuser (glover design) that I will be recieving this week? Norbert Watts told me that you might be able to help with my idea... Im just wrapping up a superwide (+ 1.5" ZR1) body conversion on mine.... I saw the diffuser that you made, looks pretty neat... you may be interested in building one off the design that I purchased as well...