A lot of people, including the law, seem to have questions about how well turn signals appear when mounted next to the headlights. But it must not be an issue as many O.E.M.'s do this everyday.
I built this back in '00 and my turn signals were mounted in the same housing as the headlights. It's hard to see, but there is a small amber smile lens under the headlights. They were very easy to see when on and no one ever suggested that I move them for better visibility.
That is definitely badass right there. I think given what it is though the same criteria wouldn't be much of a concern. As far as OEM what I've seen going on a lot is where they have some sort of aux light going on along with the turn signal and when the signal is on that aux light will shut off on that side entirely. I'm sure there's some BS regulation that causes that to be legit.
My concern is mostly if someone runs into one of those inspectors that's an absolute stickler for the rules. The ones that get you for putting a new carb on your truck, where you can just take it to the little shop down the way and they say "looks good to me"
Either way, if those are mounted to the suspension arms, it would be interesting to see how well those hold up, and what the light looks like while driving.