Inner Fender to Front Shock Brace Stiffening?

The factory spot welds between the inner fender and the shock tower were tearing apart on my '68 Barracuda convertible. The inner fender had nearly 1/2" long rips in the sheet metal at the spot welds.

While installing the US Cartool Chassis Stiffening kit in the car, I also welded the shock towers solidly to the inner fenders and repaired the rips. I drove the car between the installation of the US Cartool kit pieces starting with the subframe connectors, then the under fender braces and finally the tie between the two front frame rails.

The subframe connectors made a noticeable improvement, but the car still had cowl shake. As I added the under fender braces and tied the front frame rails together, the cowl shake was reduced, but was still detectable.

I fabbed up a Monte Carlo brace and bolted it into my engine compartment. That eliminated the remaining cowl shake. The brace I made was for the Slant 6 I had in the car, so I removed it when I installed a 5.9 Magnum. The triangulated brace doesn't fit with the Magnum in there and I never modified the brace since then. It did make a noticable difference with the /6 though.