327/T18
The individual who discovered it commented: "#3406Z100084 has a 327, T18 and a dana 20 t-case, original hd 44 front and a seemingly replaced dana 70 from and international i'm guessing. The cab and frame on it have been replaced with what looks like a 72-73 frame and cab. They actually narrowed the rear of the frame to fit together the axle and box. Never seen a frame done like this. The stock frames flare out a bit behind the cab, almost identical to my M715's frame."
