This thread appears old but not sure if the OP got an answer or not... I just like seeing the guys trucks who had the balls enough to take a 4x4 and drop it, damn the ridicule!!!! And end up with the ultimate year round street truck!!
I love driving by the people stuck in 6" snow with my dropped truck not missing a beat!!
If this helps,
My trucks an 07 and I have a 4/6 drop.. Be p repared to spend some cash to make it right.. If you decide 4/6, I know your going with a 2/4 but i also run a 305 45 22 and for me the 2/4 still left too much gap..
Up front I used 2" McGaughys drop spindles and 2" ground force coils.
At 4" your CVs will be maxed and probly shudder even in 2 wheel drive.. If going 4" I highly recommend going to KORE engineering and ordering some of their high angle inner cv joints. They run about $850 but are woth it in the end.. At only 2" they arent needed.. I had no cv issues at only 2"
For the rear I Flipped my axle over the springs and used the factory shackle..
I did NOT use a kit.. I so far have not seen a kit I truely like.. Not saying they are bad, I'm just not aa fan. I bought factory Mopar perches and welded them myself.
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This 1st pic is at 2 3/4" (1/2 coil cut) and 5" axle flip with longer shackles the tires are 305 50 20s. which are 32" tall
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This 2nd pic is at 4/6 with the 305 45 22s which as you know are 32.8 tall
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This 3rd pic is showing the difference between the 305 50 20 and the 305 45 22.. Same brand and style. I know your not running 20s but this is to help you see the clearance differences on my truck between the tires heights..