A long update to bring this build log up to the present!
I cut apart the frontend and welded in new upright columns and cross supports. The tubing that supports the coilover mount is now actually braced across the frame. The front columns might get a smaller cross brace. I need to finalize brake component/battery/etc...location up front before I decide how to tie that together. The radiator will be held on by an aluminum structure that bolts onto the frame. The front frame is just sprayed down with rustoleum for now. I'm sure I'll be back in it welding all sorts of cap tubes for other mounting points.
I am in the middle of figuring out exactly where to mount the coilovers on the lower A-arms. This required me to drag out the body and start measuring, so I got to see it sitting on the car again for the first time since 2012.

The upper a-arm design and upper ball joint will be changing, and now that I have access to a mill I will most likely be remaking all the arms out of aluminum, but I want to finish the arms I started with, for the geometry prove-out and because I'm so close to done with them. The car's track width is widened about 2" in the front and the rear compared to original Tornado numbers. Camber gain is at around 0.75°/in, with caster at 7.2° at ride height.
I made some aluminum brake duct backing plates for the Wilwood spindles. I had to make a redneck forming tool out of some metal disks and rings, but it came out really well. The form stiffens the heck out of the 0.090" aluminum, so I can push the gap extremely close to the rotor and not worry about the backing plate flexing and touching the rotor. I've had some experience making ducts for 2005-2012 Mustangs after I got angry at the price Ford Racing wanted for a set and the amount that mine squealed under cornering when touching the rotor, so those lessons came in handy here.
I milled a few more odds and ends like door handles for myself, too. I bought some from Tornado last year, but it was a good part to 'learn the mill' with.
I've been ignoring the rear suspension but will be starting on the rear upright bolt on arm mounts now that both uprights are done and ready to bolt together. I'm split between powdercoating or anodizing them. I spent so much time on them that I'm sad they won't be more visible when the car is together.
I ordered wheels from HRE and got Michelin Pilot Super Sports. No, these aren't very classic looking wheels...but my choice of brakes didn't allow me that option.

. The fronts are 285/35/18 and rears are 345/30/19. The rear clip will need mild flares glassed in, but it will be much more subtle than actual Gulf flares.
I got my Coyote crate engine delivered as well. A nice 25th birthday present. I have the intake all flipped around, but I still have to modify the harness. Thanks to Renato for giving me a detailed rundown on what to expect. It was easier than anticipated and only took about two hours even with me being excessively careful about plastic grit. Unfortunately, the engine will have to stay at my work for a while...I am not ready yet with the engine/trans mounts, and the garage is unheated so I don't want to leave the engine sitting in it any longer than absolutely necessary for fitup.