The original fan motors are Lucas, not Meriah. Meriah's were a popular upgrade before the pancake sucker fans became popular. They're supposed to draw the same current as the original fan motors, but move a lot more air, although that may be a function of the blades instead of the motor.
This shows pics of Mariah cooling fans and their blades:
http://www.panteraplace.com/page167.htm
This page walks you through the steps to rebuild your stock cooling fans:
http://www.panteraplace.com/page115.htm
I rebuilt my stock fans following these directions, and they work great. But, I have Ford Cortina blades mounted to the stock motor. I actually need to change to a hotter thermostat because it's difficult to keep my car above 160, although I'm going to add an aftermarket temp guage first to verify the questionable Veglia guage readings.
Here are pics of various fan motor/blade combinations I might have to make several posts to include multiple pics.
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