Graystone Metallic 17/24 City/Highway MPG 2005 Pontiac Bonneville GXP FWD 4-Speed Automatic with Overdrive Northstar 4.6L V8 SFI DOHC Northstar 4.6L V8 SFI DOHC, 4-Speed Automatic with Overdrive.***MECHANIC SPECIAL*** Didnt pass our inspection but could be useful to you. If you are handy and looking for a project or in need of a parts vehicle, this one is for you! Priced BELOW WHOLESALE!