Perhaps its time for a new front cover. The best place for the water rad is
turning out to be on the spark plug side of the engine. Unfortunately that complicates the pluming somewhat because the water pump inlet and outlet are on the other side of the engine. Perhaps we should take a page out of the RX8 design and make a new front cover incorporating the water pump housing with the water coming out and going in  on the other side of the engine.

Another problem is the pump should be mounted as low as possible so any drop
in water level will not cause the pump to cavitate. We built some remote
pumps a few years ago that used the stock Mazda pump cartridge. One other
point is the pump would be more eff. if the water came stright into the
impeller.  Here are some shots of that remote pump.

I am looking for feed back here. Does anybody else have an ideas they would
like to see incorporated.

Paul Lamar