Anyone know if there is much difference between the two intake manifolds? Is it possible to use a d15b7 manifold on a d16z6 head?

 

I'll pretty much gaurantee they're different. The runners are probably different size, vacuum characteristics are likely different. I wouldn't bolt it on unless you're prepared to wrestle with removing it after the engine is installed cuz you found out after the fact that it's not compatible. There's a couple bolts on SOHC intake manifolds (prolly on DOHC too) that are a total biatch to get at if the engine is installed, and you have to take all the fuel vapor control stuff off the firewall to have enough room to slide the manifold back off the studs.

 

Yes, they are different. They are better then the D15B8 (CX) or D15Z1 (VX) manifolds, but I would still recommend that you get a Z6 manifold for it. Complete Z6 manifolds (manifold, fuel rail, injectors, TB, sensors) only go for around $75.

If you are desperate, the B7 manifold will probably bolt up to and work with the Z6 head, but it is less then ideal.