So the front seats fit perfectly. The airbag light was on at first because the plug for the seat belt sensor was different. I thought it was the airbag plug - maybe they are the same?
I ended up taking the seat belt plug from the old seats and using on the new leather MK6 seat. Worked perfectly and no lights on the dash. Took about 10 minutes to swap it out. One problem is that the power lumbar plug has no outlet on the floor of the car where the other plugs are. Not sure what can be done about that, but would likely need a new wire from there to the dash / fuse box? At this point, I don’t need the power lumbar unless someone has an idea of how to solve that.
In the mean time, I am looking for a rear seat from an MK6 2 door to find out if it will fit. I have found lots of sets on eBay, etc but I am hesitant to order them.