Valve Cover breather question

I am currently using a set of the typical cast DeTomaso valve covers designed by Hall. I am using a 3/4" PCV valve in the left side and a Ford Motor Sports twist on breather on the right side. It was the only one I could find years back that would fit in the twist on opening.

I have decided to replace the breather with a good quality K&N or other filtered breather. The question is there any advantage/disadvantage to using a 1" OD tube breather over a 3'4" OD tube breather ? Or am I over analyzing this ?

3/28/065:21 PM

Original Post

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