Bite the bullet and dig into it. Like I told you before, it requires more patience than mechanical ability. I think you've talked yourself into it being harder than it really is. You know where the quadrant is. You know where the tranny is. You know where the clutch cable is and where the firewall adjuster goes. Do your best to NOT drop the little screw that holds the firewall adjuster into place and have a healthy body around to depress and hold the clutch while you put the clutch arm access panel back on (my 6 year old was perfect for this purpose). Take the driver's side seat out. I makes getting up underneath that dash much easier. It's 4 bolts.
I did mine myself in the street. Took less than 1hr. I did have a problem with the old quardrant, although some people don't. Take your time, remove the driver seat, put down some comfy old blanket, and get two really good flashlights. Pull the R clips off, be carefulll not to let them go into the depths of the firewall. I actually lost one R clip, and had to dig around in the magic bolt trays to find one. I eventually went over to Home Depot and bought two new ones.
Get a rubber hose to act as a bushing, and cut it to meet your slack needs on the dowel pin, because the new aluminum quadrant will be slightly (1/2) thinner than the old plastic one.
It was not much fun for me, but I have a lot of patience with my car.
The quadrant is the hardest part, as you know. It can be time consuming and frustrating, but not really difficult. It would probably be a big help to look around for pictures of pedal assemblies outside of the car so you can see how it all works together.
I won't say whether to do it yourself or not, as you know your own abilities, but I believe the hardest part of this install is squeezing your hands up under the dash (I have big hands). The actual work is simple remove and replace -- and you can break the old stuff when you take it off if you want ... it might even make it easier.
As an added bonus, once you do one, you will be able to do them for all your friends very quickly and they will think you are a truely hardcore Mustang mechanic.
As an added bonus, once you do one, you will be able to do them for all your friends very quickly and they will think you are a truely hardcore Mustang mechanic.
Seriously, I had little firsthand of how the thing worked, I bought a Haynes Manual, and looked over the diagrams, read the entire section on the clutch, quadrant, and planned it out to save myself stress. Understand that you might lose your temper, and take your time. A good flashlight, and steady hands are better than forking over dough for something that is easy once you do it yourself.