I am about to install my 5100's on my 2012 DCLB TRD set at 1.75 and I'm wondering if I need to purchase and install a diff drop kit. I have done a ton of reading on this site and many others but I cannot find a definitive answer. The biggest answer I found was that anything over 3" you need the drop kit. Is this accurate? I just want to ensure I'm doing the right thing. Any info would be greatly appreciated!