Oil pressure-How much is too much?

Was the pump disassembled and cleaned prior to install? A couple things pop up for me - even with an HV pump the pressure should drop when hot.
So to me it might be either the clearances are too tight for the HV pump, or it could be a function of a sticky relief valve. I would pull the pump and take it apart. Clean it well and verify the relief valve bore is clear and it moves smoothly. Note if it has a washer in there (leave it if it does), then reinstall and run it. If it still is high and doesn;t drop, pull out the washer through the plug. If that doesn;t work, replace the pump with an HP or a standard pump with the HP relief spring from the HV pump. Pressure is always a function of both the pump used and the clearances ran.