Opinions needed on Tow truck - Diesel or Gas?

[Chevy454]

Having gone the 454/Paxton route myself in a '91 Dually, but stepping up to CAT power, my vote is for a "newer" diesel. Any of the newer Cummins/Powerstroke/Duramax offerings would be ok. The new 6.0L & 8.1L gas engines from GM are TONS better than the old 5.7L & 7.4L gas engines of old, but they are still healthy eaters when it comes to fuel. And of course, stay away from the anemic Dodge or Ford V-10s.

As for the trailer, though, I hope you have 36ft of floor space, or else you're not gonna get 2 cars in it...