It was my understanding that they stopped selling them, there’s a thread on for A bodies only where a guy used them... they ended up giving him his money back, not sure where they are at now.
Yes there was a lengthy post on them. For what ever reason they didn't perform well.
It's all in here, somewhere.
https://www.forabodiesonly.com/mopar/threads/missed-on-this-combo.374177/ I was close to picking a pair up but figured I would wait until a few guys ran them....I have been the R&D sucker before....now with the trick flows coming to market these heads are likely history.
Now with Keith Black looking at doing Gen 3 blocks it’s likely time to move on from LA or magnum builds for me.