Do you mind clarifying this sentence:

Quote Originally Posted by drthunder33 View Post
...and some of the truck parts I deal with may not be ideal (clean) for mig.
Are you saying the truck parts may not be clean? If so, (and I don't mean to preach) you should know TIG requires VERY clean weld materials, down to bright shiny metal and any surface contaminants removed prior to welding. Did I get your question right, or did I miss something?