YES! THANK YOU KBALL!
Upon further inspection it appears that these two lines on the passenger side ARE indeed the coolant lines going to the rear heater. I guess I must have lost my sense of direction the first time I was down here inspecting. The brake lines are on the drivers side, running right next to the fuel line. It's funny...these coolant lines are pretty much the same diameter as the brake lines.
Im just going to spray some anti rust coating on these lines and call it a day