I got the drop links installed last week and I am really happy with them. Boots were a pain to get on.
I put 100lbs of dumbbells and my 80 lb son in the driver side to set the pre-load.
Top bolt is 10.9 M12 x 120 and bottom bolt is 10.9 M10 x 65. The M12 bolt was 1.75mm thread pitch so I had to get new nuts as the stock nut is 1.5mm threaded.
I am happy to share CAD files of the spacers to anybody interested.