Just looked at my firewall inside between the door and fender to check on how bad my cracks. There are pieces missing where the cracks split and rejoined. Gap is 1/2 inch wide 4 to 5 inchs long . I don't know how long they have been cracked or how far they go down.
If anybody hears the cracking sound you might want to look in to it. I'll keep you posted since it's my next project and I'll try to post pictures of the job.
