I have the Basic on my car the front looks nice (tucked under fender) but the back is another story I have set them as low as I can but It still does not look good(does not go under fender) to me any one have this same problem? MAybe you can direct me on a diff set?

 

https://my350z.com/forum/brakes-and-suspension/282707-tien-basic-drop.html

They only drop 1.1" in the rear, so it's not just you. You can cut down the rubber upper rear spring seat for a bigger drop. Also, maybe try removing one or both of the adjustment collars although I don't know how this would affect performance.