I have a rheem furnace, but appears the model # has been removed/faded and I am looking for the blower, to include motor, squirrel cage, drum (casing)? Anyone no where I can find one of these on-line?

You will need to pull the blower assembly out and measure the diameter of the blower wheel, the height and the size of the motor (HP, Voltage, RPM's - on the label of the motor itself). You can then either call your local Grainger or bring the whole thing to HVAC supply house. Grainger is pretty good at matching it up.