Fabricating lip firewall welds to

[Matthewjb]

I'm fabricating the lip that the inner cowl panel site on and where the top of firewall welds to. My question is the firewall supposed to be flush with the four bolts near the steering column. I'm just wondering how long I need to make the lip before it has the half inch 90° bend to weld to the firewall. Any help on this is greatly appreciated!

By the way this is only 69 Chevy C 10
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