O.K., I can see my statements could be confusing. I ordered the idler pulley from Rock Auto that showed clearly to be only a 6 groove. I did not know at the time I needed an 8 groove pulley. I called to tell them they listed the 6 groove as the correct one for an SRT and the guy said it was correct per Chrysler and therefore I had to pay to send it back. Thanks again Robby363 for your help.