Safe-T-Cap frame repair

I used one on my 68 Numbers GTS car recently. I thought the rear section of the right front frame rail was ok, until It was blasted from the outside and I started poking around. Wasn't really horrible, but. I soon realized that I required better repair than just a few plates here and there. Outside was blasted bare, and I sprayed/pumped Rust Bullet on the inside. I think I paid $150 for the cap. It is very thick metal. Didn't measure the thickness. I'm sure that it will suffice for my car, since I plan on it being a driver. Here are some hard to see pics.