1967 AIM (UPC M40 A9) calls out PN 3909630 as correct part number and implies that it is good for either Rochester or Holley equipped cars (shows alternate bolt holes for mounting). This is supported by a 1972 GM Camaro parts catalog that lists PN 3909630 as for 1967 ALL TH. On line sources (I know, I know), including some vendors, show PN 3909630 as Holley only. Searching the forum I see references to two different brackets for each application but no part numbers or photos (extant ones at least) of the Rochester specific bracket.
So, will PN 3909630 work on both carbs as per the '67 AIM? Or are different brackets required for each carb?