Hey Jacen,
I was just reading up on the subject, and the reason for the large front spoiler is that the Bobby Isaac tribute is a Bonneville record holder in it's class. Using the smaller spoiler in front the car was generating 683 psi lift up front. The bigger spoiler brought it down to a manageble 236 psi lift. In order to make this setup work in front, they had to go with the lower level spoiler in the back to keep the downforce at 100 psi in the rear. It's all for the purpose of functionality. And the car STILL holds the speed record for it's class. This was built using Ma Mopar's design specs for what would have been in 71. The reason they weren't built is that Chrysler was getting blackballed because their design was FAR superior to everyone else's aero program in that time. And instead of making everyone else step up their program, Nascar threw wrench, after wrench, after wrench in the gears for Chrysler corp, and made them run some VERY unfair handicaps So everyone else could be competitive. If it wouldn't have been for that situation, this car would have been sent into production. But with all that going on, what wold have been the point?
Nascar made it very clear that they were going to do everything in their power to shut down the wing cars, so they were never built.
Corey