Have the pipe thread sizes you need, then go to the parts store, have the clerk open the book with pictures. For $6 - $12, you'll have your part in a few days. My favorite answer to the "What year, make, model" question is , "I'm building an engine for a street rod." Don't mention Cobra, unless the clerk is a real car guy, and is over 50.
A lot of these little odds & ends can be found at your local plumbing supply or plumbing department. Pipe nipples & elbows in brass or steel. Water inlets/outlets,
oil pressure sender adapters, rubber grommets for overriders and bumpers.