Testing went well! I ended up lowering the splitter beforehand as the QR mount bolts are hard to get to. This is the biggest issue with the splitter but I don't think I'll be adjusting height much. The rear QR mounts need to go up about 10mm or so to improve the AOA without the front edge being too low, and I have some room to shape the rear of the splitter or add diffusers. So I think I'll get a bit more DF out of it, but I have to say I'm more than happy with the way the car handled today.
Wing started out at 6 degrees and I tried 10, 6 works best for now.
The car can't be street driven with this splitter so I wanted to leave the stock splitter on it, it's riveted and taped on so not trivial to take on/off. AJ's splitter is functional but honestly without a way to adjust height it's up way higher than ideal. A friend got one for his Mustang and while it looks nice it's mounted way too high with no great way to lower it.
My previous PB at High Plains was 2:00.8. New PB is 1:58.3 and I have a ways to go to learn the car's new abilities at speed. The difference is massive. And this is with Vitour P1s I got last winter, with many track days and about 6 autox events on them. Well into the wear bars and they still have a couple more days until they cord I'd guess.
My Dad went with me and took some pics on track I'll post when I get them. Here's one static pic and a vid of the 1:58