more out of 5.9l 360 magnum

I'd like to know ecatly what aluminum head is on there.

But Abomber has a excellent idea. I'm not so sure IF the engine is a true 10-1 and milling them more pushes octane issues. I myself run a 11-1 Edelbrock headed 360. But not with such a short duration cam as the MP create engine has. I can use 93 octane. The cams used in the past have always been 248* hyd. & solid or bigger in duration.

If you take the heads off for some work, measure where the piston sits in the cylinder at TDC.

If your looking for more street friendly manors, AKA torque, a RPM intake for that engine is an excellent choice. it should give up no HP on the big end at this stage of the engines build.