BOXI 2pcs Trunk Lift Supports for Pontiac Grand Prix 2004 - 2008 Sedan Trunk 4072,SG430048,10342308 Fit: Pontiac Grand Prix 2004 - 2008 Sedan Trunk Extended Length [in] 12.29 Compressed Length [in] 8.29 Limited LifeTime Warranty On All Our Lift Supports *** IMPORTANT*** TO VERIFY FITMENT. Please See Product Description, BOXI Auto Parts is THE MANUFACTURER and THE ONLY RESELLER of BOXI Lift Support ON Amazon.