New here, Great site, very good information here. My son & I are in the process of restoring a 1951, 3100 pickup. My question is what primer to use? were going to sand blast some of the body because of surface rust, and weld in some patch panels where needed, then a little bondo Im sure, what is the best primer to use first, etch? or? and should we use a filling primer after etch or what? Should bondo be after primer or before? Thanks in advance.