Parker which owns Racor bought Clarcor Corp. which owned Baldwin/Hastings. The plastic housing Baldwin filters for the Duramax are completely different from the Metal can Parker/Racor fuel filters which came from the factory. Baldwin also made a Metal can filter that was Taiwan made IIRC, Haven't seen one in a while.
I believe the Racor & it's painted Delco clone are the only Metal Can Duramax filter manufactured in the USA.
We will slowly see vertical integration of these two filter arms I'm sure.....Whatever is cheaper to make as well.
I for one don't like mergers like this as product quality almost always suffers.