Final answer... I've been screwing with this too long. Everything's dead level/square. You can see the rusty square tubing that the heads are mounted to between the slats.
The LE was designed as a plate mount so it's about in the right spot. I really just stuck it on for sh!ts n giggles. Should be cool to test.
sti is going in the lower grill.
Any input on the placement? Little late now...