Rayven01 wrote:There is a TRD front strut brace available. If you search for TRD 2009 Matrix strut brace you'll find it online several places. TRD makes a rear sway bar as well but it won't fit with the independent rear suspension in the GT.
Exactly what he said.
This is the TRD strut brace that will fit your 2009 Vibe GT. I just added one to my 2009 GT a couple weeks ago and am really happy with it. Click my signature picture to visit my Garage thread and check out pictures of it installed.
TRD does make a rear anti-sway bar too, but just as Rayven said, it will not fit the 2009-2010 Vibe GT because of the IRS (Independent Rear Suspension).