Oh, I've been there before. It's strange that they've been used as missile transporters.

Having said that, some sources suggest that the Crackerbox has an aluminum cab. I thought the Astro was the first to have an aluminum cab! Does the Crackerbox really have an aluminum cab.

Also, if the Crackerbox has no Chevy doppelganger, then it's a "Denali". Denali is a slang term I invented for GMC trucks without Chevy counterparts, named after the Yukon Denali (which has no Chevy equivalent, as far as I can tell). You could use the term for a Chevy vehicle without a GMC counterpart, but people might get confused, so I'd suggest the term "Avalanche" (after the Chevy Avalanche).

Also, as I've said before, please post any info you may have on the GMC Astro/Chevy Titan. I also have a theory about one aspect of that truck. I've also seen them talking about 70/80/90 series when referring to the Titan (or 75/85/95 in the Astro's case). My best guess for this is as follows:

70/75 series: Single rear axle, no sleeper cab

80/85 series: Dual rear axles, no sleeper cab

90/95 series: Dual rear axles + sleeper cab.

Am I correct on that?