1952-59 Ford Grainger part number for 12 volt heater motor

I know I have read here the part for a 12 volt heater motor, I can't find it, please help.

 

It is on page 3 of the "FAQ Sticky" here is the link though: http://www.grainger.com/product/DAY...&cm_mmc=PJX-_-GraingerBrand-_-43737-_-Generic

 

I had found that motor looking on the grainger site, seems to be single speed, so didn't think it was the right one

 

I've found several motors on the napa site very reasonably priced. Seems the only modification would be to drill the fan from 1/4" to 5/16". Very easly done and the motor are priced as low as $23.00, opinion?

 

I used the Grainger unit it was all bolt in no mods needed all mounting holes lined up,some switches incorporate a rheostat so the single speed motor is adjusted by the switch. Better deal on ebay and free shipping: http://www.ebay.com/itm/RV-MOTORHOM...-DC-/221629886667?hash=item339a2bb0cb&vxp=mtr

 

Thanks Jeff, right now I'm looking at a 65 mustang motor, which is 2 speed. I'll have to let it rest a while until I decide if 2 speed is worth the trouble.

 

This is it installed