How to lower your steering wheel in a Freightliner Columbia or Century Class.
(Disclaimer: I am not responsible for anything you may decide to do to your truck if something may happen).
Spacers:
2. 3/8"16 x 2½"
2. 3/8":16 x 1¼"
Bolts:
4. 3/8"16 x ½"
Washers:
4. ⅜" washers
I would also suggest adding some lock tight to the threads.