318 Full of Chunks of Rust, How Bad is That?

Did he swap over the crank pulley or not? Mopars are bad about changing pulley alignment specs between years, and models. So if its the belts not lining up and the pulley hasnt been swapped to the 273 one yet... you may want to consider another mechanic... sorry, but this isn’t this hard to swap... it’s been getting done for 50 years so there is nothing special with yours that it should be any different in complexity...