A hydraulic top link will make the whole tractor or any tractor immensely more usable. Of course, that will depend on your use, but even a mower will benefit from a hydraulic top link. If JD is still using the acid leaking mess, I would agree, take out that battery and get soemthing else, it makes mess. You can use that battery for a power sprayer or something. Those are the two immediate things I would want.