The only difference between FWD & RWD in snow is how fast you can accelerate, FWD gets better initial traction, but remember they also give you very little if any warning you are about to go in the ditch!!!! If you drive a RWD car or PU, you just drive alittle slower and take alittle more time to get there. I have been driving old RWD cars & 2WD PU's here in Michigan most of my adult life. Everyone still wan'ts to drive 80mph in the snow!!!! Probebly to try and make up for the 30 seconds they spent dustinf the 2 square foot hole in the windshield free of snow!!!! Anouther thing to consider is that unless you are one of the 1st few cars to drive down the road after it snows, you don't actually drive on snow, you mostly DRIVE ON ICE!!!!!! after it has been compacted down. And then both FWD & RWD are equally bad. Only 4WD really works, and that dosn't even help you stop, that is where the trouble usually starts. I 3rd the 86-95 GM A-bodies, I would lean to a 86-89 Pontiac 6000 STE, you could even get them in AWD form. Or a Celebrity Euro Sport. Both god cars and available in a Sedan or Wagon. And remember in the early 80's they did Make Escourt & Cavalier Wagons, good gas milage, but thats about the only redeeming quality they had.
It really doesn't matter what kind of drivetrain you have..... unless you have good tires! I parked my protege5 the one winter and was driving the 300HP country squire around because it was doing better. All because of the tires. I've also had true winter tires on that mazda and it was incredible. I caught myself doing double the speed limit in 6" of snow. And I made it up my parents long, unplowed, drifted driveway with it too. Another vote for the GM A body. I know lots of people that had them and they were quite reliable.
We just had a conversation today about tires, my Dad and me. He was telling me how he got new snow tires for his 66 Caprice wagon, back in the late 70s and that it made the thing feel like it was 4-wheel drive. It's amazing what a difference new tires make. Just put some on the Jimmy, sure has some bite!