L.A 360..Magnum ?
Sounds like someone just doesn't like the Magnum engine. With the exception of the cracking problem, which has been addressed years ago...The heads have a much better combustion chamber shape and better flowing ports without doing anything to them. For a 400 hp motor individual rocker stands have been used by GM for many decades and they didn't all fail.
You can nitpick the shortfalls but there were a lot of upsides to the engine which is a roller cam 360 truck engine. Just like the Gen III 5.7 was the replacement truck motor for the 5.9.
Just a cam and spring change really wake the truck engine up. It was not originally a car engine so the cam was spec'd was for truck gearing and low rpm use.
All Mopar engines are good, you just pick the one you like best and go for it. There is aftermarket support for all of them.
