hemi /6

did they really exists or is this something a person did them selfs. i was at a tow yard auction and ran across a 60s dodge truck i looked under the hood and it looked like a slant six hemi to me. idk if it was a true hemispherical head but it did have the plugs threw the valve cover. tried to buy it even swapped plugs so it wouldnt start for other people(i know its dirty but i really wanted it lol) still some guy out bid me buy 100 bucks. has anyone else seen one them selfs and not just on the net?