Tried everything I've seen suggested online (brake fluid, paint thinner, gas, etc) on some overspray on the back. Wouldn't touch it at all.
The guy I bought the car from worked at a body shop and I think he used something better than the off the shelf rattle can stuff. From the looks of the overspray on the sides/back of the housings he sprayed it with something in a paint gun. Gonna see if I can get ahold of him.
Offer still stands, anyone wanting to trade the red tail lights for some well done tinted tails let me know.
I'll try wetsanding if I don't get any bites.
Edit: talked to him. They were sprayed with tinted clear coat.