Ok, now that i know not to buy EQ heads, ( or till i find out they are "fixed", what heads would be a good option for a budget build? Looking for a head that flows in the neighborhood of 265 to 270 at .550 like the original EQs did with minor mods, and would work with either an early 360 block or magnum 5.9? Still wanting to hit 425 to 450 hp, peaking 5700 to 6000 rpm, good torque from about 3200 up.