2 Questions, Rear SB and Wheels

[BD1]

1) Where does the rear SB go, and how do you install it?

2)"The lugnut pattern is 5 on 114.3, the offset is 46mm, and the size is 16x8."

This is from an ebay add, the wheels are off a 3KGT, the offset is perfect, do we have a 114.3 pattern? Will these and other 3KGT wheels fit?

 

[B2119]

Yes you do have 5x114.3. Although i think the offset is alittle big. i thought 38-42mm was good. except i think you would be able to run wider tires with this offset. correct me if im wrong