Do ya think the D2s would really be bright enough Greg? I dunno...
Also, DO NOT use that metal bar. It may be solid to the grill, but its not part of the support structure when it comes to tieing the grill to the body/frame (obviously). The gitter/rattle would be out of control with any weight on that thing.
To see what I mean, try this: Make sure the hood is down and latched and take your palm and whack the middle of the grill, lower down where your center light would be. Not hard enough to break anything, but hard enough to give it a good jolt, kinda like what your suspension will take (absorbing most but not all of the hit) when off road at speed. What happens to the entire grill?