I'll relate what Richard Jung (Rick) has told me. Some of it relates to the discussion above.
1) Optima seems to only only a single wing *I'll post the rule at the bottom
2) In Optima, 8" above the deck is it
3) The suggestion, since SCCA doesn't limit the height, is have two sets of uprights (and Rick directly said "buy my tall one, then copy it for the Optima version")
4) good question about attack angle, and whether or not its adjustable. For Autox, you'd want far more downforce because you won't be suffering the consequence of high drag at speed - since the max speeds is 50 mph or so.
5) I can get either a single or dual element, I've sent the rule I've attached below to Rick too - it seems that as long as the cord width is less than 12" that multi-element wings are okay... of course, that does question whether the 12" is total or per wing - e.g. two 12" wings complies or 1 9" plus a second 3"
6) duck bills, they all use the 73 and older rear spoiler - which is both shorter and straighter side to side. Add to that issue, I don't want to drill holes to mount it and the mountain that needs to be climbed to convince me is quite a bit taller then just going with a radar arch style.
7) Isn't the test (I can't remember who, just it was a yellow C3) with the yarn still on here? - the video - I'll look later, but that was interesting in where the yard was going. I'll have to copy that test once this is stuff is installed
8) I've spent a lot of time on the AFR site - that is so helpful
9) he doesn't do splitters, yet. With that said, I'm ordering material to start laying out mine - there's a company in California that will get sticky for you if you send them a pattern; I'll probably go that route. long ago I learned that it is sometimes cheaper to have someone else do it then do it yourself because they get volume discounts that you don't get nor do that have to do it 4 times to get a professional result.... Carbon Fiber is, most especially, that to me
10) I plan on making a cover that fills the gap between the door and the side pipe out of CF - but I still need to find out what its combustion point is (and more importantly, what degree it can tolerate without deforming).
11) he doesn't have a brace, but I will have a design for one when I'm done. Probably I'll make that (at least in drawing form) available on here - especially since the distance from the frame to deck is stock
12) my wing width (according to the rule) cannot be wider then the car - the car is 79" wide from tip to tip... most wings are for tuners, so max width is 71".... and here's where my inexperience again shines through - does it matter?
13) Splitters... I think I'm okay here, that said, nothing stated about belly pans or defusers
I love no rules
14) wickerbills - Rick has competed against the 24 hour Vette, which has a wickerbill, (embarrassingly, I confused his car for theirs), and he beat it - the only real difference, it seems (aside from the driver) is wickerbill v. wing. Which brings me to my question of wouldn't a wickerbill be rotten for the high speed portion of the challenge? I can flatten the wing if more top speed is needed (and PIR has a really fast straight)...
Appendix
13. AERO – participant vehicles are allowed to have any factory installed aero packages available on their specific vehicle platform. If it came from the factory on the vehicle platform (including active aero), regardless of size, it’s legal
GTV - any spoiler or wing configuration with a maximum of 8” tall from the highest point on the rear of the decklid or a maximum height of 6” above the lowest point of the rear window, whichever is less. The maximum width of the spoiler/wing must be no wider than the original panels of the car and must not extend more than 6” past the furthest point of the rear of the car. No wing may exceed 12” in chord length (front to back) at any point.
Splitters and wickerbills – Splitters are unregulated in all classes. Wickerbills will be allowed on any wing, however, the maximum height of any wickerbill is limited to ¾” from any mounting point and must be between a 45 and 90-degree angle to the wing. Wickerbills on spoilers will be measured as overall spoiler height.
