So, I currently have a d16a6 manifold part number "PM-6, HF-2" and a D16Y8 manifold part number "P2K IPT-2". Between the two of them the Y8 manifold is 100% complete; the A6 manifold is missing the fuel rail and injectors. From what I've noticed between the two the Y8 manifold fuel rail has 2 spots that bolt it up vs the A6 manifold that has three. After skimming though many threads I can't decide what is best to undertake and swapping into my car. It's an 89' with a D15B2. I also have a PM6 ECU to compliment all of that. What are the advantages of the two? Eventually I'm going to turbo the car so, maybe it's all together better just to run by the junkyard and find a Z6 head an toss it on the car..? Thoughts?