I found a 1992 OEM "dealer option" kit on eBay-- I've seen them there once in a while. They go for about $100 and are very well built (by Bosch I think), they have a good wiring harness and an OEM-style switch. They function very well, but I also like the appearance-- they are rectangular and have a lens that matches the OEM headlights. The downside, of course, is that you can't always find them-- I've seen three sets go up for auction in the last year.
Whatever you get, I'd recommend rectangular shaped lights mounted in the lower valance.
BTW, fog lights, as opposed to driving lights are great to fill in that dark area the first gens have right in front of you. At 30 MPH and up, the extra visibility may not help you avoid anything that comes into the road, but they make a big difference on a dark, foggy highway when it helps to be able to see the lines on the road.