Need some help on struts and shocks Options

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Need the replace my rear struts as they are damaged (bent) there


I was thiking if i just replace the housing of the strut and kept the shock inside, would that be possible to minimise my spending. That is only if the shock inside isnt damaged. The housing is only bent sideways 10 degrees or so. My question is would my shock could be salavged? If so when i take them out in a couple of days, how can i tell?

Thanks