The car comes stock with 5 degree blocks, plus the 2 degrees of kickup, and you get a total of 7. Using the 3 blocks reduces it to 5. Yep, they only have the upper hole. This raises the roll center. You may want to make your shocks shorter, but I would leave them the same at first, the increased steering from more droop may balance the decreased steering from the higher roll center.
Good luck,
Speedo