Hi Bob,
I've just googled wespe models GMC 6x6 CCKW review and found a couple of reviews of it on Amazon which aren't very detailed, the most useful being,
"I build 1/24 and 1/25 scale motor vehicles, so I really like any company that produces unusual subjects in these scales. I would have preferred full engine detail, but I am just happy to have this subject in my preferred scale. Thank you, Wespe and I can't wait to see what you release next in 1/24 scale."
Jim