The Colorado mix of snow melt is pretty nasty. I've seen a fair bit of 80s with rotted windshield frames. A newer 5.7 sequoia would be a lot better they have a lot of airbags in a collision. Keep in mind you loose about 40% power on the Colorado passes. So a 210hp 1fz only makes like 120hp on the passes. A 3fe would be down to like 95hp.