Water pump pulley

I got the 2 5/8'' pulley , but its 6 15/16 diameter...

That's what I have now. The 6 15/16" dia. puts it too close to the crank pulley rear groove so much so that I can't put the belt on it without removing the fan and pulley first. Mine is also 2 11/16" deep and doesn't line up with the rear groove of the crank pulley unless I put a spacer behind it.