Is it posable to get hi performance heads for the chevy 6.2 or 6.5s to set them up for pulling? Im worring about the heads cracking every time you step on it. Does somebody make a aftermarket head that wont crack easily like the stock ones?

just read about SSdiesel supply has heads cast with extra castiron http://www.ssdieselsupply.com/product_129_Brand_New_6.5_Diesel_Cylinder_Head.htm ladded