Formosa 41 foot 4.108 engine question

[Alan B]

Hi all,
I am in the process of restoring a 1973 model Fomosa 41 ketch is Sydney, Australia.
I have a question about the Perkins 4.108 engine that I am in the process of rebuilding.

The engine is almost finished but the original Serck engine heat exchanger that mounts across the engine head at the back needs to be replaced. I have also looked at the original exhaust manifold and it is looking a bit thin on the inside from corrosion.

I am thinking about purchasing a new Bowman heat exchanger, header tank that incorporates the heat exhanger in the exhaut manifold.
I also run a Bowman engine oil cooler that mounts on the same side underneath the original exhaust manifold.

My question is if I prurchase the new Bowman engine heat exhanger, header tank part number PE180-3483
will the Bowman engine oil cooler need to be moved or can I leave it in the original position?

Has anyone done this before?

The new sytem though I think will be lot better then the original one although quite expensive.

Thanks for anyone who can help me out here.

Al