2007 Toyota Sienna Owners Manual - Page 400
2007 Toyota Sienna Manual
Page 400 highlights
07 SIENNA_U (L/O 0612) Suspension and chassis CAUTION Do not modify the suspension/chassis with lift kits, spacers, springs, etc. It can cause dangerous handling characteristics, resulting in loss of control. 400 2007 SIENNA from Oct. '06 Prod. (OM45437U)