Just saw this 1968 302 MO long block listed on Facebook. It appears to be partial vin:
18L347567 with a date stamp that appears to be VO6I9MO. (not sure about the 9)
so it would have been for a 1968 Camaro with VIN 124378L347567
Seller is Robbie Shartle out of Meadville PA. He is asking $6k manifold to pan.
https://www.facebook.com/marketplace/item/505168874325339?rid=10220630597410862&ad_id&rt=1&refID=0&refType=0&referral_code=commerce_attachment