We all seem to forget that the "Mopar Action Swap" was originally published in High Performance Mopar back in the 80s. The warning against the taller knuckles was added when he republished that article after Dulcich published his disk swap article, also in HPM. I had what has become known as the "Mopar Action Swap" photo-copied and ready to scrounge parts when Dulcich's article came out. Dulcich's seemed better written and the parts were easier and cheaper to come by so I used the taller knuckles. I've always been amazed at how it's been assumed that if it's published in MA it must be 100% right and no amount of real world examples or experience counts. Bigblockdart has had the info for a long time and somebody at Dodge-Charger.com did exactly what the new article in MM did but, as we know, if it's in MA, it's gospel.