Whatever you do you’ll need to replace those breathers on the rockers. At full throttle the engine pulls no vacuum, so engine won’t draw excess oil vapours back into the engine.
Either have a better (seperate, media filled) breather and remove your PCV.
Fancy anodised black breather. http://www.radiumauto.com/Universal-...-Can-P178.aspx
Or run a better quality air oil separator that plumbs back into the intake.
High quality air/ oil separator. (Plumbs back into intake). These have replaceable filters. https://www.autobarn.com.au/pe56052
RIP - 1969 Camaro, green/black vinyl. BBC, th400, Holley EFI, 4.10 TrueTrac Dana 60, too much rust and not enough traction. 11.015 @ 111mph