Anybody happen to have dimensional data (or even better, engineering data) for the trailing arm setup used on these trucks? My Helm manuals list pretty good frame dimensions, but I do not have data for this application. I have been seriously kicking around the idea of building a 2x3 rectube frame using this setup for use under a late 70s Chev passenger car. This will be, of course, an extended project, but I'd like to complete some decent CAD drawings prior to firing up the Sawzall.
Thanks... Mark