Im gonna use the d16a6 bottom and the z6 head. with esp rods, je slugs, acl brgs, etc. the head with a hot turbo cam and full valvetrain. some other external parts manifold etc. my question is what is this setup capable of as far as whp. dont the stock d series block hold about 300whp at the most with out sleeves. ohh ya i might get a block guard or fill the block.lmk what you think. i need ideas about all of this. its gonna be my first d series build.