Best budget 360 stroker kit
magnum heads are garbage for anything other than slightly warmed up or stock AND don't flow over 250's cfm and are a liability when it comes to durability/longevity.JMO/experience
It cost me $800 ish for a full performance rebuild on the heads, I did my own porting.
Not everyone wants to do it this way and that is totally cool, cause we are all individuals here.