[ScumOne]

Originally Posted by ZeGermanHam

My brother had the same discovery with a 461 he had an engine shop build. Car was chronically overheating, so he thought he'd swap out the water pump. Took it apart and found no sleeves and a single rubber o-ring gasket sitting on the bottom of the timing cover. Needless to say, he won't be using their services again.

The shop that rebuilt my engine for the previous owner is out of business. Based on what I found last night, I can see why. Sounds like they had the same level of Pontiac rebuilding skills your brother's contacts had.