Hey Nick,
I'm doing the same thing (building a Bug for auto-x).
I've looked at the whiteline bars as well, but the price has hold me back so far.
Let me know how the bars work out, I'm very interested in it.
Also what other mods have you made (suspension wise) ?
I also own a Subaru and am a member of a Subaru club. The club is fairly active in auto-x and some are running the whiteline bars.
As far as I know, they all love 'em.
Hmmm, in stead of an answer you got more questions
Rob.