You can download it here for now; I'll remove it as soon as Killap makes a properly packaged version available. To install: replace the 'patch000.dat' located inside the Fallout 2 application (select 'view contents' to um, view its contents :) ) with the one in the downloaded archive.
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I've been playing the Mac version of Fallout 2 with Version A of Killap's patch installed for the last month or so, so getting it to work is certainly possible. You'll definitely need to ditch or replace the patch000.dat inside the app, although I seem to recall the game choking (resulting in...