Thanks, guys. I did some digging when I got back to my computer (original post was from my phone), and I found the PDF Info Sheet describing the Space Cab & Super Space Cab.
http://www.daf.com/SiteCollectionDocuments/Products/2012-infosheets/Modelrange/DAF-XF105-infosheet-Cab-EN.pdf
At 2.105m (6ft 10-7/8in) most people can stand upright in the Super Space Cab. This is good information. I'm thinking the Space Cab will make a better XT.
If you're going for the 1970s look, try sewing elastic that you tint a light tan with Minwax Oak Stain. Here are a couple of shots of the hose bed I did for my American-LaFrance 1000 Series Pumper:
I use Dupli-Color a lot, and I spray it right out of the can. Since I don't own an airbrush, I've never tried to decant it to use in an airbrush. As for primer, I use either the gray, white, or red Dupli-Color primer depending on what I am painting.