howzit
what is involved in putting an ef xr6 head onto an 89 3.9cfi??
cheers

Take the EA head off, put the xr6 head on. Rocker gear is different can probably still be used (different lash ajusters). Intake manifolds are different, the xr6 head has some little bits takes out for the mpefi squirts.

If you are doing a mpefi conversion at the same time there is nothing to it. Not sure how the cfi manifold will go .

You wouldnt want to keep the CFI, kind of negates any benefit in putting the EF head on.