Hi, my name is Steve, I own a 1991 Chevrolet Camaro Z28. I live in California in the coastal where salt is prevalent. I have severe rust problems along the firewall and firewall seams. I have uncovered some severe rust growth along on the passenger side of the firewall to the beginning of the floor pan. I imagine the drivers side is just as bad. I have pictures along with this post. What do you think the best solution is to solve this rust problem?