Seems like I read here somewhere about the advantages and disadvantage of anti-inversion shackles. I'm installing 2.5" springs on my 40, considering putting on 1 1/2" extended shackles while I'm at it. What are the pros and cons of Anti-inversion shackles? I understand what they do, but I see many people that don't go that route.
Also, when installing shims, are they required on all four perches or just on the front?
Also, when installing shims, are they required on all four perches or just on the front?