help with intake manifold...

[thunderbolt]

What metal said

The 4v ports are huge in comparison to the 2v ports so using a 4v manifold with the 2v heads will probably only hurt your performance since there will be massive port mismatch. As the above have said, either get an aftermarket intake (proformer or something like it) for use with the 2v heads, or get the 4v heads. If you go the 4v head route, be ready for very poor low end torque, but great upper rpm flow.