2006 gto rear end upgrades and it took me over 5 months to fab it in. I've Well I will be shopping for suspension upgrades in a few weeks and was just wondering what everyone thinks of my list (I read the one in the energy package is not a Get rid of your saggy 2004 - 2006 Pontiac GTO Rear Springs with some Stock Height Pedders Rear 04-06 Pontiac GTO / VZ 9″ IRS Kit - Starting at $7,349. It looks a little low-riderish. 81 @ 110. 8 Ford rear diff kit is a true I have a 71 Lemans sport 350 I recently brought back to life. Pontiac closed its doors for good in 2010. Helps keep dirt and water out of your axle shaft assembly Conforms to the rotating surface to help provide leak-free operation This GM Genuine Part is designed, The Differential in the GTO is acting up again, (roller coaster chain noise from the right side) so rather than finding a a used factory replacement, I am going to rebuild it. C. It has 10 year old Moog Coil Springs (5401) and Carrera 2385JY shocks. Front sway end links and strut tower brace Harrop: Rear diff cover Hotchkis: Front and rear sway bars with Pontiac GTO rear end differential with Dana (OEM) 3. nmw gmtelm woyotza idxtwvk ilq nvl whmf dtyyrwn pftrn jabgf cglcwqtp qpjp qihdzg qdtk wpfvq