I believe Lincoln Mk8s came with B heads from 93-96. And C heads from 97-98. Cobras came with C heads I believe. Someone correct me if I'm wrong.
Also, the Cobra and Mk8 intake cams are the same. Exhaust cams are different. So you can take Cobra exhaust cams and intake manifold and put it on a Mk8 motor, and have basically the same thing.
No, I didn't do the 4v swap. I was saying I actually bought a complete and running Mk8 car for $100 and yanked the engine from it. I ended up using the Teksid aluminum block and putting my 2v heads on it with flat top pistons.