I am curious did you find the engine you find the engine you wanted. I have a complete one and it has carb, choke heat tube, exhaust manifolds and it was cast in July of 72 and after the aging of the block and machining /assembling it would be used in a 73 model. If you knew how the plant warehoused it parts , I do because I work 32 years at map, the could have still ended up in your truck. well let me you can contact me at 734. 818. 9225