I recognize that engine and drivers side exhaust manifold and special engine motor mount bracket in your header picture !!!! Yes I do have that DS Manifold with my car.
Tim just so you know I own 2 M Code Darts. Here a picture of the other one which was molested and missing its original drive train only a month after it was purchased by the original owner. He pulled the motor out after only having it for a month and put a Hemi in it, check out the Dated picture July 69. This car has quite the history and was know as Wild Thang!! Yes that's a Hemi with 8 Webber Carbs on it. Check out the intake picture. I got it with the car when I bought it from Al Case. I think I have enough Hemi parts to put it back like it was in it's Glory days.