Hello, My wife has a 2005 Pontiac montana sv6. When it was in the shop awhile back they told me that her rear shocks were leaking. I climbed under there and I can see signs of leakage. However I noticed that she has the HiJackers on there and those are roughly $60.00 a piece. Autozone had multiple options online about different shocks that were compatible for her vehicle. Can I put a lower price on there and bypass the air hoses or did those vehicles come with those for a reason. Now that I'm thinking about it does that have a air/ride lift for it to raise up when the car is started? Is that how it could of came from the factory or someone just put those on there whenever they bought it? Any suggestions or input would be great. Thanks