Picked up some elka 2 shocks. Need some help.

My stock front springs have steadily gotten weak anlong with the rears. So much with max preload it still bottomed out very easily and busted the fr shock. Seen these Elka stage 2 shocks and got em for $650. They are 2 yrs old and have 206 miles on them. Good deal? I was about to buy the $500 fox shocks from brp and new springs but figured this was a better buy.

These came off a 2015 1k outlander xmr . I dont know much about shocks. But these have 2 springs on each shock. Why? How do I go about adjusting these for my 2015 800 xmr short chassis with 2" lift?

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