The bosses are there, but they're not tapped or faced. Starting with an NA block, it's straight forward to just drill and tap the holes to NPT. Then you don't have to dick with banjo fittings or crush washers. I've got a garbage S14 NA block you can have if you want to practice.

You'll also need a waterneck solution. The DE's come with the S13 version without the coolant return port.