I’m working on my 71 Satalite I’ve had since 1979 and while removing the headers I found more rust on the left front frame rail just behind the K member. That rail has been patched once already so I’m thinking I’d rather swap out the entire rail. Looking all over the internet I can’t seem to find anything other than 70 down and or E Body parts. Now I remember reading that 71 E body front rails can be on a 71 B body or where I can purchase the correct frame rail or Safe-T-Cap. Any help will be appreciated.