I've started work on the dogleg on the driver's side. Because I don't have a shrinker/stretcher, I'm fabricating the panel piece by piece. I've been thinking about how to approach this, and this is how I'm going to do it:
1) fabricate the outer dogleg, using the existing sheet metal (or what's left of it) as a guide.
2) cut off the rusty outer dogleg (or what's left of it) to gain access to the inner fender.
3) rebuild the inner fender lip
4) weld in the new outer dogleg that I made in step 1
So anyway, over the weekend, I got started on step 1. In doing this project, I figure that the most important line is the top edge of the dogleg, because if it is wrong, it will be quite noticeable in the door gap. So I've left that part a little long, and will grind it down to match the existing line once it's tack welded in place.
I started out by making a cardboard template of the fender arc, which I transferred to the sheet metal and cut out, making sure to leave a little extra. Then I clamped it to the existing outer dogleg and ground it to the correct profile with my flap disc.
I then used a couple of sheet metal screws to hold the first piece in place, then made another template out of masonite, and held it perpendicular to the first piece, tracing onto it the horizontal profile of the fender (i.e. where it swoops in to meet the rocker). I then cut out a piece of steel based on the template, again leaving a generous amount on both sides.
I just held this second piece in place by hand as I tack welded it, starting in the middle and working my way to the edges.
Once solidly tacked, I removed the sheet metal screws and pulled the whole thing off, and continued welding both sides of the join:
Once I had it mostly welded on both sides (still a few spots to touch up), I ground down the outer face to match the vertical face of the dogleg. Later, once fully welded and ground, I'll cut out the excess material from the inside, but for now, it helps to add stability and reduce heat warping.
Here's the test fit of the new outer dogleg. Again, this won't be welded in place until I've repaired the inner fender. So far, so good!