Hi Tim., Thanks for the information. I responded to the e-mail notification that was sent to me by the forum but I guess it didn't post back to the forum. I note the pictures that you listed are just like the part I got from Chevy Duty that was the wrong item. I sent you some photos via your e-mail as I didn't know how to get them to the forum. One photo shows the difference in the bracket angles of the two different vacuum advances. I looked at both Carters and Obsolete and some other catalogs I have and they all use the same photo which looks to be the wrong one. If you know what part number is correct for either company I will order from them. Thanks again
Craig
