There aren't many of these around, but for what we do on extreme hillside pulling a 400 gallon air blast sprayer, these 4WD tractors will hold up against the newest tractors I have. These are heavy tractors by comparison set up at approx. 7500 lbs. w/ ballast and weights. Durable engines that have over 10,000 hrs. on the original engine.
The only negative was the brakes. We found an easy fix by adding a brake disc and brake plate to the factory setup. This was accomplished by turning the outer spacer the same thickness as disc and plate. This mod allowed for a 4-disc system, rather than the factory 3-disc system, resulting in a major improvement in braking performance.