Here's what I did on my old car...
A couple of sealed breathers on the covers,with braided hose running up to a collection tank,with a good breather fitted on the top of it.
The tank had a tap to drain it,but it never got much in it,the
oil mostly just blew up the braided hose,and ran back into the engine when racing.
The tank was also stuffed with steel wool to stop any slosh of
oil if it collected any.
It worked really well, and it gave me something extra to polish !!
Then I stuck my "cobra nationals badges" on it.......FANCY !
Cheers,
Warren