Frame rail rust. Fun times.

[Interrobang]

Finally got the L28 to where I wanted it., so rust mitigation was the aim this week. Found a few do-able repair areas in the Z before stumbling upon this while cleaning up the area under the battery tray:

 

 

Right where the frame rail meets the firewall there is a nasty patch. Seems like just about the worst place to have rot. Was afraid grinding it too much might make it lose its tenous hold on life, so I just sprayed rust-fix on it to slow it down. (don't worry, everywhere else got ground, rust fixed, primed and painted)

 

In short - how fucked am I?

 

Has anyone here welded in new metal in this location? Should I start looking for a frame to swap my drivetrain into?

[Interrobang]

Looks like motorsport auto sells a replacement rail. Bit rich for my tastes though: www.thezstore.com/page/TZS/PROD/SBC1B10/30-7314

[Indey]

Bad dog rails

http://baddogparts.com/index.php?main_page=index&cPath=1

[Interrobang]

Those are for the frame rail that runs under the floor pans, no? I need to patch the rail inside the engine bay, at the firewall. My pic didn't make it obvious, sorry.

 

New plan is to cut the worst rot out and make a patch that will fit on top of the rail, then mig it in.