Your OEM gen 2 steel wheels were 16"? I thought gen 1/2 rims were all 15" from the factory. At least their aluminum ones are, but never saw the gen 2 OEM steel rims...OEM are +46 offset so about 5.5" backspace on 7" wide rim. No generic steelies will fit. They wont clear caliper bracket. Many many moons ago I've tried to fit 16" steelies/alloys from my Gen 2 to my Gen 3. Doesn't work. Your best bet is stock wheels.
Toyota FJ 17" steel wheels are your friend, too.