Final Update!
Hey everyone thats been following and helping out.
Lifted the rear end of the car on jack stands. Removed both rear wheels. Stared at both sides for a while while checking the springs and the other suspension components. Finally, my dad noticed the driver side sway bar bracket that attaches the sway bar to the subframe, is slid as far forward as it can move in its bolt holes. On the passenger side, it was not. We ended up loosening the sway bar bracket bolts on the passenger side and sliding the bracket as far forward as they would go (thank the mighty car gods that be it wasn't the driver side bracket we had to move). Once we did this I put some tape around the megan racing camber arm where it was being rubbed before, drove 60 miles, checked again and its completely fine. Finally got this sorted out.
Ride height is fine, there is some discrepancy with the new rear springs but I'm putting that down to not having exactly equal camber on both sides.
So if you ever install Eibach sway bars and have the megan racing camber arms, or the OEM cmaber arms for that matter, I'd be sure to slide the brackets as far forward as they can go.
Thanks again for everyone's help and insight while I tried to figure this out.