I just pulled the oil pan off of my 318 to install an oil pump and noticed that the front and rear rod journals were drilled like the early 340s.It is definately a forged crank.The block was cast in ?/14/72 the month casting was omitted.Front of block JM 318R 40773161.This eng was in a 68 Dart Post project car that I bought..The engine came out of a 72 or 73 Scamp. The K frame from the Scamp was LBP with disc brakes.It also had a front sway bar. I know that Mopar sometimes cleaned the parts shelves from the previous years. Any input?