L.A 360..Magnum ?

My buddy a local Mopar engine builder has finally been visiting this site after my prodding. He built a 360 magnum engine for his son with magnum heads that easily runs 10’s at keystone. I never had an opportunity to port a set of magnum heads as I run all LA style engines. I got to run my fingers through a set of magnum heads at his shop and was rather surprised how nice the short turn was in these heads. But and I said BUTT if you are going to put time in doing a nice set of magnum heads it would kinda suck if they cracked right away for you. That’s that reason went I ported my W2 Econ’s heads I quit when they hit 300 cfm because my part number were prone to cracking, and did so.