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Seems to me getting a skid steer quick adapter for your existing pinned loader arms is a much easier/cheaper solution here.
There are a number of manufacturers -here's one option that makes each custom for your loader pin configuration:
Convert almost any tractor to universal quick attach with W.R. Long Pin on Tractor Loader Bucket to Universal Quick Attach Converter, we have drawings for more than 750 tractors!! Call or email today!!