There are three basic "flavors" of the "cone height" for the pressure plate. Stock Ram Air cars used the "high cone", which in turn, used the "short" TO bearing.
Usually, buying a complete clutch "kit" will get the correct TO bearing. The pilot "bushing" is usually a Chevy, so it won't fit. The part number for the correct pilot BEARING (Pontiacs don't use a bushing) is 7109 (Federal Mogul/National).
