Hoping that we can have a discussion about front frame rails. I am working on my 1969 Coupe and at the moment getting ready to weld in a front frame rail patch, the floor support and torque box. According to the frame dimension picture that has been posted many times the front of the front frame rail measurement "A" should be a quarter inch higher that the measurement "B" at the cross member support area. My "A" measurement is almost 1/2" lower than the "B" measurement. This is with the car level at the rocker panels. I have had a couple people tell me that the front frame rail does slope down.
Those of you that have way more knowledge than me on this and have done several cars, what is correct? If the diagram is actually correct, how do I go about fixing this? The gaps for my doors and fenders did not seem to be that bad before disassembly but it is possible that it was worse than I remember. Calling @latoracing @mustangstofear @Ridge Runner
Here is a link to the diagram again for easy reference.