Eros Tweeter?!

I think the Eros tweeter was discussed in a recent thread, but it doesn't really address my question.

I'm looking to build a set of Eros!:

http://www.speakerbuilder.net/web_files/Projects/Eros Project/eros.htm

The two recommended inductors are discontinued, so I just replaced those with equivalent value Jantzen copper foil inductors at PE.

But the big problem is that the recommended ScanSpeak tweeter (PE 276-510) is discontinued. Can anyone recommend a good replacement that won't require a change in the x-over?