Is the crank case well vented? If there's pressure build up might have pushed a seal out. Maybe it the corners of those end intake gasket. Pulls sound good, it likes to chirp and spin those tires going to second
I think it is, moroso catch can system on the driver side, and just a filter style on the passenger side. The moroso system has a pcv valve in it but its not connected to vacuum so maybe thats the issue.