So im sick of trying to find a cylinder head around here, all of them have issues and im thinking about using my y7 head off my car from 3 builds ago lol. From what ive found the y7 and z6 have similar combustion chamber and should yield a 7.8:1 compressiom on the d15z1 block. Are these heads worth a damn when it comes to flow?

Crazy that im thinking about using the head off the engine I pulled to replace with a b16 lmao. I literally pulled that engine and kicked it down a damn hill