The mechanism is fairly simple but it IS NOT easy to remove. The pedal assembly was stuck engaged on my '90 a while ago but it was rusty (the only thing on that that was rusty...) since everything on that bracket is bare metal for whatever reason... If you took it off and cleaned and lubed everything I bet it will just work without changing, it's pretty simple. The only issue I had is breaking the parking brake switch getting it off...
All of the bolts are awkward to get out, I had like a foot of 1/4" extensions and a U joint with my body contorted into that area to get it out. A hint, that bolt that goes vertical at the far left of the bottom of the dash is involved... I think the bolt heads were 3/8"