1968 Dart 2dr post RESTO (father/son)

Supposed to be decent outside this week, so I want to try to finish this k-member. I think today I will finish all the seam welding, and grab some cardboard and make some templates. I can't wait to try what Idaho was saying!

Here is a question. The 3 welded nuts that the box bolts go into have ugly threads. A tap goes in, the bolts tighten up, but they got rusty at some point and there are spots on the threads that flaked off. Should I replace them? If so, whats the best way?

I'd be VERY surprised if the nuts need replacement. If you want peace of mind, I'd suggest you look up the torque spec, find some short bolts, use a larger nut or washers for spacers, lube with oil and torque them down to 5 ft lb over spec. If they hold fine without stripping you have your peace of mind.

Glad to hear the welding progress. I have pics of the other boxed area on the K if you want.