there is a smaller shimano freewheel tool but I am not sure the old park number.
your going to have to clamp that hub in a vise to get the Fwheel off.
I think this is the one you need
http://cgi.ebay.com/Shimano-Boss-Sty...item53e17c3f49
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk