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Old 05-08-2009, 09:27 AM   #4
Scooby Specialist
Member#: 157894
Join Date: Aug 2007
Chapter/Region: MWSOC
Location: Saint Peters, MO
2007 WRB WRX


You already have sways (if you didn't know that) You don't HAVE to, but getting sway bars that are larger in diameter than stock will greatly increase your handling and responsiveness. When upgrading sways, you should upgrade your endlinks as well. Ungraded sway mounts are also recommended but not ABSOLUTELY needed.
To answer your question, no you don't need to upgrade for the springs to work. That's what it sounded like you were asking.

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