Shaping a FlowKooler water pump plate for a 67 Pontiac GTO engine.

I replaced my water pump with a FlowKooler Hi flow water pump on my 1967 gto 400 engine, but I needed to shape the cover plate to close the big gap between the impeller and the plate. The car is a 1965 Lemans, but the engine is a 67 GTO 400.