If you mount them to the factory rims, you may have a problem contacting the fender wells or front bumper/ rock guard. You may have better luck with 15x10 rims with a 3.5"-4" backspacing. You might have to use a 1/2"-3/4" spacer on your front bumper mounts to move it forward.
With all of this said, yes, you can possibly fit 33's on a stock 92-96 Bronco. BUT, if you do any serious offroading where the suspensions flexxes to it's limit, you can expect fender contact either in the front or more likely at the rear fender openings.
THe maiximum "safe" tire size is a 31x10.50R15.