Tried and true big block radiator/electric fan setups!

You can tell that the ebay radiator isn't what you want.
That's a Ching Chang part that is prob marketed to fit a thousand different cars. They don't care if your fan doesn't fit they already made their money and will sell another to the next sucker. The mounting flange is flush with the face. Plan on cutting and welding the flange so the core sits forward more.
Find a stock period direct radiator for your car and look at the side profile. It will become clear what you need to do.