The 200 I-6 is a great little engine and they are still plentiful. They were still in production up until 1982 in the Fairmont/Zephyr. I pulled one out of a 1982 Zephyr for use in the T-Bucket I'm building. All my old Falcon stuff interchanges with it. The only difference is the shape of the oil pan, and the exhaust manifold. Try checking with the local tow companies in your area. Many times they have unclaimed vehicles they need to unload & complete cars can be bought very cheap. I've scored several good purchases this way over the years. GOOD LUCK!