My 66 Cowl and Firewall

[Turnall]

Ok folks. Here's my first post. 8) I would like to know a few thoughts on my cowl and firewall.

A. Replace the whole bottom pan of the cowl or just patch?
B. What should I do with the firewall, replace or patch?

6T07T235364 65A 8 26A 01D 21 2 6

Not a very "desirable" Mustang, I know. However, I won't to do it RIGHT. In other words, I know replacing the whole firewall for instance would cost more that patching, not really my concern. Please let me know if you have any questions and feel free to be open! Now let me see if I can post these pictures. lol.

[22GT]

I would section the firewall, replace the whole lower cowl, and re-use the cowl top.

[Turnall]

Thanks 22GT. I have read quite a few of your post here, thanks for your knowledge. When you say section the firewall, would you buy the whole firewall and then cut out the sections you want to use?

[65fastback6]

First off welcome to the forum

You may be able to patch the firewall with pieces of metal rather
than buying the whole firewall panel and cutting pieces out of it.

[22GT]

You can get the outer portions of the firewall separately. You can also use plain flat sheetmetal and fabricate portions.

[Turnall]

Any suggestions on where to get the sheet metal? Best fit? On both the cowl and the firewall pieces?

[ToneMT]

Any classic mustang supplier carries those parts - easy to find.

[pdgrafelman]

I patched both of my cowl has last fall. I used the patches instead of the full lower cowl due to cost. However, If I were to do it again I would use the full lower panel. Butt-welding the patches would not be difficult for a skilled welder, but for me it was difficult. Plus, alignment of the wiper holes is critical, with a full lower panel I think this would be easier. I also replaced my firewall extensions but did not have to touch the firewall itself, so I cannot help much there.