ok...
Not exactly. In your other post you mention it has front coils, which means it's no newer than 78, and makes a big difference in what front springs you'll use. Motorhome manufacturers at that time ran a year behind, often selling a 78 as a 79, an 83 as an 84. I've seen em dating back to the early 70s, and dolphin is only one brand, this is why I asked what a pre dolphin is.
...the guy told me that h thinks its an 79 but its more like a combo of a 78 and 79...thats what he said...but yes it has front coils and i dont recall any torsion bars...also its not a dolphin i was just using that as a referance as to what it looked like