Been missing my last C body ever since I sold it. So I finally found one I could afford in decent condition. It's a 1970 Dodge Polara, 2 door, 318, column shift. No dents, just some rust issues behind wheel wells in trunk (from bad rear window seal letting water in.) Doors line up perfectly straight, and shut like a dream. Pretty happy with it.

Anyways, ONTO THE CODES. Im not concerned if the the block is numbers matching, I'd just like to know what it is and where it came from. What do I got?

Vin number: DL23G0D184213

Casting code on 318 drivers side: 2536030 318*1

drivers side exhaust manifold: 3614395

Front of engine I cant make out the last part, it look like the last 2 numbers had a double stamp, unsure. I think it says HM318R 37172772