The 2.5" will look the best. If you get the 2.5" CCM spacer the truck will sit level. The ride will be the same with the 2" or 2.5". I have the 2.5" Total Performance spacers on mine and they are a little taller than the CCM spacers so the truck sits a little Cali. I still need to order my rear blocks to level it up.
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