New guy from Wisconsin

Just purchased my 2nd A body 69 Dart GTS, my first one I bought new at age 18, and had to sell it. My 2nd one I just purchased, and it has come with some headaches. The original 383 was replaced with a 440. The exhaust manifolds have been repaired. Passsenger side has casting number of 2806800 and driver side 2848728, cannot find replacement for that one posting a pic, can anyone tell me if this is original or has it been modified. Thx

image.jpg