Made some progress this weekend. I tried scanning the large format drawing in two parts on my 8.5x11 scanner but it was hard to join the two scans so I bought a larger scanner and was able to scan the crawler unit whole and with the help of Carl5858, convert it to a drawing file to be able to edit the lines and scale it to my appropriate size. 8 of these will have to be machined. In 1/16th scale they will be 14-1/4'' long.
This is the scan before any modification:
Top View:
