Need some help identifying an intake. GM BBC intake dated 3-21-66 casting # 3886093.the 6093 has been stamped where the original last 4 numbers had been removed. I was told by a person that works for GM that this was done by GM on a run of manifolds for early 67 L88 430 HP engines. It has an open plenum with the ribs still in the floor. It still has the snowflake, and is in very good condition.I would like to sell this so any info as to what I have would be helpful> thanks, Jeff 620-549-3770
