Joseph,
Get this--I got a phone call today....the place I had ordered from was outa the rheem unit that I was gonna use--and so they wanted to sell some other relay...to the tune of $70 bucks or somesuch...
So gonna instead go with the ICM203, which appears to be exactly what you had suggested above a couple posts back.
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$12.00 or so at Graingers IIRC, and probly will just order from them...being's as doesnt make much sense in spending a whole lotsa time shopping around just to save a buck or two.
Thanks again to all.