HUP (HUW) Frame Question

[Bruce Parker (RIP)]

Has anyone access to an original HUP (or similar) who can answer a question about the front frame channel that the cab cowl rests on?

My question basically is whether the HUP used spacers between the frame and the channel.

The channel that came off my HUW (seen placed in location in the photo below) doesn't have spacers but I really can't recall if it ever did when I took it off years ago. It may have and they got lost. The second channel I have is taken off a Chev 60cwt and is the identical part. But when I took it off I attached the four spacers as seen in the pic.

So did the HUP use spacers or not? The HUP front cowl has many differences and also HUP engines sit differently so anything is possible.