Here's what I got. It was pretty dang easy. $28 for the motor, 10 minutes with a cut off saw, little clean up around the edges, drilled the holes and it mounted right up. Took the squirrel cage off the old motor. Drilled the center hole out to the same size as the shaft and pressed it on. Fit nice and tight, actually was a b!tch to get it back off. All and all, took me maybe 30 minutes. I'd say it's a solid replacement option. One thing I did do was tape off any open holes in body of the motor that was exposed in the engine compartment. There was a big hole in the side of the case. Since the motor was designed to be inside the car and not the engine compartment they weren't concerned with anything getting wet. With it sitting in the engine compartment I taped it all off with black electrical tape and faced the hole towards the firewall.
One other thing I'll note. I was using one of those $3, 50 ohm resistors off Amazon so the fan switch would have high and low. It works just fine, however it does keep the fan from going full blast. I hooked it straight to the battery just to see how much air it would move and it is crazy. I left the resistor in and I'm using it, but if it gets really cold I may bypass the resistor and just go with crazy fast on and off.
Took some cardboard, cut a hole in it to get the OEM motor to sit flush, then traced the pattern. Transferred the pattern onto the Napa motor
Got a little excited and drilled some pilot holes, they weren't too far off. I just make them bigger to make sure I hit all the holes in the fan box when it was mounted. Nothing to it.
It mounted right up, runs like a champ
You can see the whole I was talking about, just up and to the right you can see the outline. I'll probably just wrap the electrical tape around a time or two just to be sure no water gets in. But for $28, I can always go buy another one.
