Submitted on 2011/06/24 at 4:53 am I am lowering (2/2) my 2001 S10 RWD. Looking at your website I am a little confused about the pinion shims (1023BP) – the website says they are required for 3″ and 4″ blocks. If I use the 2″ steel blocks (SB2LK) do I still need the shims? Thanks…