Anyone know off hand what diameter the brake lines (steel ones running underneath the car) are on an 03 x type? I am going to order some new line off ebay and I'm not near the car currently...Thanks!

 

zoolander, I believe they are 1/4" steel lines.

 

Most cars have 3/16". Why would you order from ebay if you can buy from any auto parts store? 20' are about $5-6 (?)
you can also rent flaring tool for free.
Get piece of your brake line and bring it to auto parts store to match.