Killer, man - looks great. I agree about the heads tho - gotta color match the insides. Do that and you might not need any tint on them at all.
Only other thing I see on the whole car - exhaust tips. Maybe black ceramic coating? Would be pretty cheap to DIY. Just sayin - it's the only chrome on the whole car, you know?
I agree about the exhaust note - once you change the exhaust, that FX growl is gone forever. You still get great sound - but it's more of an unknown - no way to tell what you will get until you install it and hear for yourself. I can tell you most people love the change. Only twice in my life have I even heard of somebody buying an exhaust and then selling it immediately cuz they didn't like it.