Yesterday I finally got from greatmodels.com C.G.M. Productions cab for GMC CCKW. It's rare item so I decided to share with you some impressions.
In small box I found one big cab and about 10 smaller resin parts, very interesting metal grille, small PE and decals.
Overall quality is good, there're only a few air bubbles and parts needs only minimal cleaning but details are soft and could be better.
Main body is casted in one piece - with engine bay, driver area, roof and even fenders together. It makes construction very easy - there's only separate engine hood, doors, front window and floor. For interior we'v got seats and ... I don't know right word in english

Dimensions looks to be right in scale but I can't say how it fits to Tamiya model because my GMC is still on the way from Hong Kong

If anyone is interested in this subject I can make some photos and upload them here.
Merry Christmas!
Piotr (:-)