I'm going to be doing the very same thing Ade. Don't know if I'll go with the 1ST Place auto products "Chin Spoilers" as you have although I love the look of those!
Anyways, Ive been looking at the MoPar track cars, and it seems to me that most of the OEM style spoilers are for looks rather than function,,don't know could be wrong? But I see a lot of competitive cars that use full length spoilers that are very low to the ground. Too low! They wouldn't survive on the street, at least where I live. Rail road tracks, potholes, ect. I love Drews frnt spoiler! His seems to be the best of both worlds.I may have to pay him to build me one!
(He's talented with "plastic" fab work). I'm not