The other day i was driving down the road and my muffler came unhooked, I thought that I broke the rubber connecter off the hanger but that wasn't the case. I found out that my rear frame rails are rusted. The front 3/4 of the car is rust free but not the back, gotta love michigan winters. Is there any way to fix this or at least stop it from getting any worse. Some body please have a answer i really don't want to sell this car because of this.