Hot Rods Heater Identification

This heater came with a 50 Chevy truck I bought, pretty sure this isn't for that. Anyone know what this heater would have come in?

 

could be aftermarket...but it would be easier to tell, if you could get some bigger pictures. I know, it's not easy to do.

 

I agree with Jim,appears to be aftermarket. HRP

 

Doesn't have any marking, ID or Brand on it that I can see

 

Is there a tag or name anywhere? HRP

 

No, no tags