My 2014 Forester came with a bare roof, I have access to used side rails, can I mount them?
I would not try to add factory rails but use an after market system like Thule. https://www.rackwarehouse.com/thule-car-roof-racks.html
Only if OEM and you have access to the factory mounting ports build ibto the roof. Not sure about '14 For.
GO TO A SHOP THAT DOES SUNROOF AND AFTER MARKET ADD ON THEN IF IT WEAKS IT NOT YOUR PROBLEM
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