Thanks for the comments. mcbassin, your thread was one of the ones I read when trying to convince myself I could do this, so thanks for the inspiration.
Seam sealer the inner panels that will be no longer accessible once the outer cowl is on.
I'm planning on getting the cab blasted and powerdercoated again once it's all together and done before paint. So leaving the rest for now.
POR15 on the outer cowl support pieces, which are also what the front fenders bolt to.
Stretched the inner cowl. Made a cut.
My stretching rig. Piece of 2x4 laying around, already cut to close. Random Honda jack screwed to the end of the 2x4. Screw through the drivers wing panel into the bottom of the 2x4 to hold it in place. Another chunk of 2x4 to prop the jack end up.
This is about where I wanted it to be. Doesn't take much force to get here, I can do it by hand the stretching rig just holds it for me.