they is different sizes anorl - so the normal breather adapters wouldnt fit neeva.
This very morning I fitted 2 breather extentions to the front timing cover and the flywheel housing using part of a 'fleabay' kit (bright blue pipes) I just tied them neatly and ran them up to meet up near to the 2 original breathers (black shepherds crook lookin). I coiled an extra metre on both and secured them at the top of the engine bay.
I figure if the water gets that far up I will be at least bollocks deep... I would call that swimming not wading.
I left the extra tubing in case I decide to get a snorkel.... The tubing can be linked with the T fittings so just 2 tubes can be fed through and up the outside of the snorkel and neatly tied and looped at the top pointing down.... like the 'shepherds crook' to prevent water and crap getting in.
From what I have read and a 'Safari Snorkel fitting' video I watched.... seems the tubing goes on the outside. I will not be using blue... would get a couple of metres of black to finish off.