from what I have learned:
BMR has no increase in geometry, but they are stronger than the stock arms and lighter
I think Detroit Speed, Global West, Speedtech and SC&C arms are awesome arms. SC&C is a cool arm and is adjustable which can give you different changes in your geometry. Marcus with SC&C says the arms are easy to dial in.
Also Hotchkis is coming out with a set of Upper and lower arms in January. I spoke with a guy from hotchkis awhile back and he said the arms will have geometry improvements. He didn't really give any more information other than that.
Lower control arms do not help your geometry from what I am told.
Some guys box their stock lower arms to make them stronger. Or you can go with the tubular for the wow factor. Hope this helps a bit
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