I just had another idea. I think one can carefully bore a 1.25 inch hole
about three inches deep in the exhaust side of the pump. Press and epoxy 
in a six inch long sleeve that mates up with the outlet from the block. This 
will block off the internal  bypass channel in one fell swoop. This should 
leave about an 1/8 material on both sides of the tube. The top of the stock 
pump will be sawed off. 

A picture in a couple  of hours.

Real cheap and quick.

Paul Lamar
 
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