Reddy heater r155d look-a-like--uses same motor...

Question

I have a reddy heater looking heater that says "Whayne" on the top cover and "master" seems to be the brand on the data sticker. I got it second hand and found the motor was burnt-up and the fuel pump mounted to the back side of the motor was in 20 broken pieces. What do I look for to buy a replacement part. Note: there is an area on the side that probably had a data plate riveted on it but it's missing I think it probably had the model number and serial number on it so I'm unsure of how to order parts.