Here is Jaybird working on his 440. It will be getting a valve grind on the 915 heads, MP cam 284/.484(He likes the MP cams so dont say Voodoo cams are better ), and the Edelbrock Torker II with Holley 750 DP. He doesn't like headers so these manifolds will have to work. Some HP manifolds would be nice ife he could get a good deal