Do the FFR A arms adjust via a spherical rod bearing end? It's now been a dozen years since my racing days ended, but I think the amount of adjustment produced by turning the rod end one wrench flat on those cars was .040”.
It's surprising how much the cost of the adjustable height setup platform with digital four wheel scales has come down. In the 90s, they were a few thousand dollars, now a really nice Intercomp setup is about $1,400.
The way FFR does it you either use the factory lower control arms, or else you buy their tubular lower control arms. Neither of these are adjustable. If you buy the FFR lower control arms then they just bolt up, if you use the factory Mustang ones there's some minor modification you have to do. The upper control arms are adjustable and that's where you adjust your camber and caster, and then of course toe via tie rod ends.
Frankly the front end geometry doesn't seem all that great to me, the tie rods have to be bent pretty far forward to reach the spindle. People do say that bump steer is an issue on these, and the FFR spindles (another $450) are supposed to reduce the bump steer. It didn't seem that was really worth it to me, but we'll see how I feel once I get more going on this.
I'm at the point where I do need to start ordering a few more significant parts. I ordered a new steering rack in the "quick ratio" 12:1 that came with the factory performance package on the Fox Bodies. I'm going to be using electric power steering assist rather than hydraulic since I don't want any , so I could either go with the power rack and just leave it "depowered" or I can put in an actual manual rack. The manual racks were not only more expensive (unless going with a 20:1 ratio, which isn't nearly quick enough for my tastes) but they didn't save more than a couple pounds. The weight savings I'm getting is really in removal of the power steering pump.
There are two write-ups I've seen for electric power steering. One puts the booster right behind the steering wheel, which I think is the correct location for it. Another puts the controller in the engine bay which I don't like. From what I can tell it wasn't designed to be in an engine environment, and plus that makes (one more thing) to clutter up the engine bay and moves CG forward. I need to research a bit more but I'm thinking that doing it my own way will make more sense.
Pretty soon I'm going to be getting to the point where I'll need to start pulling parts from the parts car in order to make significant progress. The first thing that needs to come out is the pedalbox as I'm getting about to where that needs to go in. If I follow the instructions in order (I'm not, I don't think the order is very good to be honest) I should be working on the rear end right now. I'm going to get the drivetrain pulled out of it first and then put the shell someplace on the property where it's out of the way. Then I can also start parting out the rest of it.
An additional design decision I need to make is regarding the power brakes, whether to do vacuum assist or electric assist. Electric is appealing to me since that allows for a cleaner underhood area, but I'm still undecided on that.
Another decision I need to make is regarding the fuel system. Originally I'd planned on a carburetor, but am now pretty sure I'll do EFI so that I can install the cool velocity stacks EFI manifold that gives me the look I'm going for. Given that, I'll probably just set up the fuel system as a standard in-tank pump with a fuel return, and do a Walbro 255 LPH pump since that will be more than enough for the power I'll be making.
I generally feel like I'm not making as good of progress on this as I should be, but then every time I spend even a small amount of time in the garage, I feel like I've made good progress on it. Part of what helps with that is the fact that (at least right now) I'm at a stage where everything I do creates a visible impact of the work performed. One thing is that I'm used to having to take things apart and then put them back together. In this case, everything (at least for now) is in the "going together" stage.