Ive seen one recently on Craigslist . The person wants $4200 for a 5.2 magnum long block with Edelbrock heads, balanced bottom end with 340 crank etc.etc. thing is no dyno run or claim of horsepower. One could order a 5.9 magnum 320 HP form Summit or Jegs for less. I am guessing its someone who bought the 318 hype built it up during COVID is now trying to get some of their money back. Id bet they are taking a loss.