Unless the master cyl ran empty you should only have to bleed the rear.

On my 89 the bleeder is on the passenger/right side. But yes only 1.

You might want to get what is called a line wrench. It will help to keep you from rounding off the line connections and even maybe the bleeder.

89 2dr 3.0 AT, manual hubs. 33x12.5 MT
gen 2 coils,Cranked front tbars
Dons rocker protection, Front/Rear Bumpers. ARB rear locker, 2" BL, Beefed up skid plates/trailing arms. Gen II uca, 2 Bouncy seats www.youtube.com/TagGeorge