Originally Posted by 69 widetrack
OK thanks for the extra information...I'm currently working on a 1930 Model A Ford and a 1922 Ford Hack/Woody Wagon...Is your 1929 a Ford? Especially if it's a Ford (not that I think Ford is weaker or stronger than any other make, it's just that most of my experience with cars of that era are Ford's) my first recommendation still applies, pay close attention to the area of the frame on the drivers side near the engine...they have a tendency to twist or sag in that area, and would be more prone to twist if you have a major rust or pitting issues.
Hope this helps.
Good answer Ray. Boxing plates are commercially available for those fellows who want to stiffen up the frame. If rusting and pitting is severe, you may want to consider them.....
1928 - 1931 Model A Boxing Plates - Wolfes Metal Fabrication