I think you can, but from what I remember reading the earlier foxes require a little more work than say an 85/86. If you do a search. In the fox section you'll find alot more info. Good luck and welcome.
306 with all bolt ons, letter cam, ported E7's, T5 swap, full exhaust, 3:55's, 2" drop, and the worst paint you'll ever see or feel.
Dyno'd 300/316, 2745lbs-track scale
Best ET………12.4@108, 1.66 60ft on 8" ET Drags.