Please forgive me if that comes across as a stupid question, as I am sure it is.

I was asked to research and source a few parts for my dad's 911. Is the only source for proper cylinder heads searching the used classifieds such as found on this forum?

Do any parts houses such as Stoddards, Pelican, carry heads? I searched the Pelican website, but was not able to find anything. Also, best source for bearing kits? I imagine some are better than other, recommendations?

Please forgive my status as a Porsche neophyte, I am clearly not a mechanic, but doing my best to learn.

Josh