Best way to root Samsung Galaxy s3 SCH-S968C (StraightTalk)?

[AC Question]

Got a new phone, so I have this S3 laying around, wanted to revamp the ram and such and tinker with it, so far I'm having issues finding a way to root this without paying $40 or so to scammers and not getting anything in return

 

[zocster]

Cydia Impactor try this?

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