S14 Rear Camber Issue - Please Help! Upper or Lower arm?

[KeepHerRunningS14]

My front camber has already been adjusted but my rear is chewing up tires way too fast. Obv., the tires turn in at the top and out at the bottom. What is the difference between an upper camber arm and lower camber arm? Pillow-ball or "crescent-shaped"? Do I need both upper and lower or will just one of them do the job? I am stranded in a POS town until this is fixed . Please help!

Oh yeah - '97 S14 Base Automatic, the springs are tein S-tech - pretty sure it was 1.3" in the front and .9" in the rear.

[KeepHerRunningS14]

Someone please throw me a bone - I have searched the forums repeatedly and can't find an answer to this question... I'm negotiating with the seller on my tie rods right now and need to get my camber kit sent at the same time. Can anyone tell me what I need to get so I don't have any more interstate blow-outs?

[Elbowblk]

Camber does not increase tire wear. it just makes tire wear uneven.

Toe on the other hand is what eats up your tires tires.

on camber aftermarket adjustable rear upper control arms will do the job.