So... What did I buy?

The 23'd revision to the mold. LA 318's were made for a long time so many mold and core repairs were made throughout it's production life. Is there a casting date shown on that block. It will be a late production one for sure.
No pictures of that side of the block but the listing said out of a 1990 ramcharger, so that sounds right. The only anomaly is the intake manifold is for a carburetor, and I don't see dogbones on the lifters. I was pretty sure the 318 got both in 88', but i might be wrong on that, maybe it was the 360?