Ok in a nutshell,I have a pump that has groves cut into the casting where the pump gears operate.Not to be confused with the drive gear which the cam gear turns.I read on a previous post that Bern said if the bushings the gears ride on are worn,pretty much game over for the pump.I have grooves in the casting,so I don't see any CPR for this pump.Now this setup is the factory power steering,not assist.The filter was so badly clogged the PO stuck a screw driver or something threw the filter to keep it flowing.Now I can't seem to see the trees for the forest on this,I just need a pump.It has C7NN3k514D and its a Plessy pump looks like Made in Britain.I looked can't find a pump with this exact part number.I'm thinking the D on the end would be what generation this pump was manufactured in.