Yes, the radiator and its shell are held in place by the sheet metal surround (which is wired together).
Then, the sheet metal surround is bolted to the front cross member of the chassis (with two carriage bolts). I modified my previous post to include a few words about the carriage bolts and I modified the last photo to point out the head of one of these bolts.
The top back of the radiator shell has a bracket where the hood center support bolts. The other end of the hood support bolts to the firewall. This support is a thin sheet metal channel that has a bolt riveted to each end (3/8-16 I believe). This hood support steadies the top of the radiator assembly. It also allows you to adjust the distance between the top back of the radiator and the firewall so that the hood space is proper.
Regarding the brakes, there are some good figures in the repair manual. Use the figures that discuss the AA brakes (1927) and not the AB brakes (1928). The brake discussions in the repair manual mostly cover car brakes, not the one ton truck brakes, but the info is basically the same.
One thing I've run into before is the service brake bands (external to the drum) sometimes need to be man-handled to become round enough to brake well. I did a write up over at the VCCA about this issue. Here's a link to it:
https://vccachat.org/ubbthreads.php/topics/415134/brake-band-bending-technique.htmlWhen I get a chance, I'll take some pics of Lurch's brake setup. One thing to note is that the brake light switch is located along one of the long brake rods that stretch from the brake pedal back towards the rear axle. ;-) Goofy, but fun!
Cheers, Dean