Am new to the form and want to install a boost,egt,and trans temp gauge on my 04 3500 Duelly with auto. I know that I will need to drill and tap the exhaust manifold for the egt probe but what do I do with the boost and trans temp. probe? Do I have to drill and tap for these also. . Thanks for the good photos of the egt installation. . Bill in Arizona and freezing wishing that some of the global warming would come this way. : 
