I suppose thatat the moment the only choice of an EFI manifold is to modify a 351w unit.
This is a picture of three intake gaskets overlaid upon each other.
The white one is for my A3 heads the smaller port with the rounded corners is the 351c 2v (iron head) and the third is a 69 351w gasket.
It is similar in size to the C302 port but you are looking at the same thing as I. Tell me that this is doable.
I don't mean to be a doubter but it looks like re-inventing the wheel to me.
Forget about the bolt holes lining up. Plan on welding them shut and starting over.
As a matter of fact it may be easier to redrill the manifold bolt holes in the heads.
A sheetmetal intake might be cheaper.
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