I have a Chevy 4 barrel intake manifold with provision for oil fill/ breather tube. Part number 3882858 , casting date appears to be I- 29-6 or you look at the pictures and figure it out. Has some corrosion .at the heat crossover. If you're interested in give me a call 10:00 a.m. to 10:00 p.m. at the above number in the reply box thanks