Hey, I see you're in a bind, just don't rush this bit.. make sure to bleed the brakes properly once you're done.. air bubbles will make your new brakes as effective as bars of soap.
And soak those bleeders in wd40 too!!!! if they break you need to get new calipers. (you could theoretically drill them out. but i think i bought two loaded calipers (with pads) for 80 bucks + a core charge. it might have been less.
'92 YJ, 4.0L, rs5000, bds 2", 30" for now.