Actually there isn't anything to be confused about.
Guido's is SRW I believe, under 10k
Without a pic, I can only surmise SoG is dually...with all that entails...
Yes, it is a SRW E350 12'. 5.4 gasser. I love that engine. The original one was still running beautifully when I pulled it. It had several broken exhaust manifold studs and front timing chain runners were wore out. That was at 574,000 miles. The transmission I changed at 500,000. It was fine, but how long does one trust major components like that? By using Ford reman I now have a 3yr unlimited mileage warranty on both. Cost was 2k for the trans, 3k for the engine, complete. Took me 2 weeks to do it. I was not in any hurry, obviously, but replaced everything else that I can see while the engine was out. Best engine ever. The 2 valve version, which I have, us so much better than the nightmare 3 valve. One easy way to tell which one you have is the coil packs. A 2 valve has an angled coil pack boot. A 3 valve coil pack has a straight boot.
The link for the Transits that I posted earlier were, in fact, cubes , yes. But an excellent alternative to a $sprinter, Chevy cube, or Ford Spartan body cutaway SRW. My main reason for buying one would be so I can haul 3 skids more comfortably. Right now, my current van is 12 ft, but I lose my bed with 3 skid loads. With a 15 ft or larger, (17 ft is the longest), I would still have my bed behind the seats temporarily until unloaded. I also have 49" between wheel wells, so a van like that Transit with no wheel wells would be a nice change. Dual rear wheels would be so much more stable as well. So, I wouldnt buy one of those to haul more freight, but to do the job better. I am more than content with what I make at Load One for the amount of work that I do.