I think I'm going to buy one. I've already got the MAS one all painted and was planning on making brake ducts fit around the lower grille, but I think I'll get one of these for track use.
I think that is a good idea. This one will be a lot more effective because it's lower. I know it's lower but the MAS one is fiberglass and the ABS plastic will give some rather than crack like fiberglass.
I know someone that has the original fiberglass version of the ABS plastic one offerred now. That fiberglass on has been repaired a couple of times and it's absolutely baby driven.
This spoiler will make a difference. For reference a much shorter and narrower 69 Camaro spoiler reduced front lift from 400lbs upward to 250lbs upward. When they also put on the rear spoiler, that pushed the rear down 75lbs down (from 25lbs without). But the rear spoiler tilted the front up and the front gained lift to 300lbs lift http://www.yearone.com/enthusiast/restoarchives/winter99/18-21camaro.pdf
This ABS spoiler is like the ones actually used in Trans Am in 1970 and I'm sure has more downforce than a narrow short 69 Camaro spoiler.