Is there any difference between a 3.3 and 4.1 head?

[Vaughano]

I have a 3.3 84DA engine I replaced from my 85 XF. This was a leaded fuel engine.

I have no intention of rebuilding the engine, but I'm wondering if the head is worth keeping for a 4.1.

 

[DYNOED250]

there the same

 

[Vaughano]

Cheers.