73' B3 340 Duster pro touring build

I also stopped by Summit racing and picked up my new heater/defrost unit to replace the big bulky factory unit as you can see in the photo next to the 7-up can it's really compact and should work out great, I also bought a NOS fender last week and after a quick trip to the media blaster to remove the 30+ year old factory primer I've got a good pair of fenders finally.......The cool thing is that there is no cut out for the radio antenna which I was gonna fill anyway...not 100% sure if I like the indentation that remains, I might just smooth it all out.

Any part number on that heater set up? Would work great in my pro street 1940 dodge 2 door sedan.