mine was the same as yours, although it just came form the kidney box to a catch tank, it literately threw oil out.

Ive fitted this setup :



NOTE - the fitting going into the block on the exhaust side is a 3/8 NPT thread !!

so theres a outlet either side of the block which returns to the sump under the oil level, then any thing that can will travel up to a separate catch tank.

On hindsight, if i was to do it again i would spend the money and just fit a wrc collector under the inlet manifold!

anyway, with fresh oil filled the day before, after a full day on track not one bit of oil made it to the catch tank - which was night and day different to before. ofcourse it was fresh oil so next time i imagine there might be a little after some moisture gets in there, but nothing major ! nothing like before !