Hi, I'm 15 and just started on my first restoration a few months ago, a 56 Pontiac Chieftain. The floors are rusted out, but other than that the body is in good shape. It had the original 316, but someone had taken the carburetor off and left the engine exposed to the elements. The engine was frozen and there were metal flakes on the spark plugs and in the oil, so me and my dad decided to pull it. I have a 305 from a 84 Silverado that I can use, but I would rather keep the car as original as possible. Is the 316 even rebuildable? What needs to be done, and how much could I do myself? Does anybody know where to buy parts for this engine, and which one do you think would be better for the car? Thank you for the help!