Valve lapping AND oversized water pump pulley

Thanks to all for the technical opinions on my "lealy" valves.  

Next in my engine buiId-up: 

 I  have a grasshopper problem near here and decided that in order to stay
competitive on the track,
I need to slow down my water pump.

Does anyone have an over-sized water pump pulley for a 1275 for sale?

Contact me off list.

Thanks.

JohnD