I am looking for information about the manufacture of the OEM pump (PN 6675660) and any possible aftermarket pump replacement sources. I know the shaft is 7/8" and has 13 splines , I don't know the OEM manufacturer, pump displacement, operating RPM range or the technical specs for the mounting flange. Any information would be appreciated. My goal is to replace the existing pump with one that has about 30% more displacement so that I have 20 GPM available at a lower engine operating RPM of about 2000 rpm. I only use aux hydraulics for a snow blower and I'd prefer to operate the engine at 2000-2100 rpm as apposed to 2700-2800 rpm. Ian
