I bought my "87 " 4.0 L without A/C, the bracket part number for this is [5300 2904 BRACKET, Idler Pulley Mounting - w/o Air Conditioning]. It has an additional idler pulley.
Sorry, I don't have a picture hosting site, so I can't post one for you. Doubtful that you could find one in the bone yard, chrysler has it listed for $61