If you look closely at the 318 intake gaskets you will see the head ports are larger than the intake gaskets, large port 360 heads.
Was doing a mock up at the time as to which intake manifold to use. Was fitting an LD4B for a 318 on the 360 as I have 3 of them and wanted to see if it would flow right at the head. As a mock up, that is where the engine sits for now until I get back from the Winter get away. Then will get things finalized when I get back.