72 Dart Swinger 3.6L Pentastar +T5
I found an even tighter fitting bracket that looks better, cheaper too.
I was looking up info on the new 2017 3.6 Atkinson cycle Hybrid and noticed its sleek idler bracket. Its tucked in much tighter to the block.
Item #6 5281294AA BRACKET-IDLER PULLEY- $25
#5 5281301AA PULLEY-IDLER $30
#3 6510224AA BOLT-HEX FLANGE HEAD $2