Sorry I missed your post, hopefully this will provide you some answers. Here is the assembly diagram for the front mounts both early 47-48 and 49-55 1st Series.
https://www.flickr.com/photos/advance-design_parts_co/16807079128/in/set-72157631868452754
The rear mounts are another issue for parts availability with the early trucks as the center shackle and bumpers are not reproduced. These were changed on later trucks due to cracking in the cowl and forward areas.
https://www.flickr.com/photos/advance-design_parts_co/8129350166/in/set-72157631868452754
https://www.flickr.com/photos/advance-design_parts_co/8129470535/in/set-72157631868452754
The reproduction kit as you can now see is fine for the front but represents a less than purist result for the rears. Some people remove the shackle/bumper combination converting to the rear shackle configuration below, but that is another question.
https://www.flickr.com/photos/advance-design_parts_co/8129510232/in/album-72157631868452754/

1950 Chevrolet 3/4-Ton 3600
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