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Your best bet would be to order a 1967 Assembly Manual (the AIM) and use that to get an idea of what parts you need. The assembly manual has pictures of each part for each type of engine configuration with the name of the part and the original GM part number. That will be a good place for you to start. Good Luck with it.
If you are looking for internal engine components, I would start with a book called, How to rebuild your small/big block Chevy engine. I would supplement that book with the service manual for your car. The AIM is great and very necessary for everything about the assembly of your car. It will not show the internals of the subsystems like the engine, transmission and rear etc. Jerry