Looks like a Desoto Hemi to me. Get the numbers from the block in front of the valley cover then go to the Hot Heads site see what it is. Go from there. I bought a running 330 Desoto Fire Flite Hemi for $2500.
Yeah but yours looks like it actually RAN at the time of purchase. I always love how people try to sell a "running engine" with plug wires missing or off and zero gas electrics hooked up. If you caint hit the switch and hear it run at the time of purchase, it's a core. Even mine. That's why when I tried to sell it the few times I did I always offered to tear it apart so the potential buyer could see what's in it.