is the d16y7 block the same as the d16z6 block? reason im asking is i was considering buying a z6 head (vtec) and having it ported and polished. then building the head. then building my stock block and putting the z6 head on it. would that be a good move? im not wanting to swap in a different motor because ive had past experience with the single cam turbo and i was happy. any help would be great. looking to order the head asap if it will be wise

brandon