How long can these springs last and when should they be replaced? Thanks....

 

springs should last forever.

 

they have a 10 year warranty. and like Atl said, they will last the life of the car

 

Really, Thanks....

 

Where can I get a set of pro-kits for 2.2 for real cheap?

 

i went to adventon.com, like $170 + shipping or something like that. Fast shipping, with tracking provided, very organized site too! Go take a look, that was the cheapest i could find them, other than eBay, of corse.