Those are 94-98 V6/GT front brakes, with 66mm piston calipers. Rear drums are standard fox brakes but using ranger drums/axles.
No special MC needed for this setup. With rear drums, you are stuck using the stock Fox MC. Calipers are 66mm units (vs stock fox 60mm) so the pedal may be slightly softer than normal. There really is no good MC to swap to as the popular ones are designed for 4 wheel disk brakes and have larger bores (to push more fluid)
Spindles could be either the 94-95 or 96+. No way to tell as they came standard with either spindle. Only way to tell is to look at the angle of the tie rod link on the spindle.