Looks good. I too put shiny headers on my 3.6 this weekend. They don't look quite as nice, but have heat...
The rumors are true about these GHL headers not fitting to well. Fit perfectly at the head, but the left one is about 1/2" higher than the right! It all ends up working with some adjustments of the muffler hanger (and a big hammer), but the muffler still isn't very level.
I also switched to a single out exhaust. I know, I'm such a weenie - heat and single out. First impressions of the muffler: I dunno, no resonance like the dual out, but the sound isn't as good. Hmmm... It'll do for now though (the dual out just was way too loud/boomy for me).
-Steve