I'm running Perrin Sway bars on the front and rear
25mm to be exact
I've ditched all the whiteline stuff, including the links
And replaced them with Poltec adjustable links instead
They are much thicker than the Whiteline units
Also running the Perrin ALK with the front alloy Sti arms

With the US$ doing well, Perrin gear worth a look

Get it direct from Perrin.

Whiteline are fine, they are bang for buck.
Cusco and perrin products are my preference though, more solid and joints are better
Poltec are worth a look for links and lateral / trailing arms

http://www.poltec.us/