I think buying a coilover shock might be best (I'm wishing I had after awhile), but I have the same setup as you and just put on 33" tires. I kept my 5100 shocks but added the 3" Toytec spring, and put my 5100s on the third notch. Admittedly, it isn't as cushy as the bottom notch on the shock, but it's still comfortable, and looks great. I had to body chop and trim the wheel well, but I have no spacers and no body lift.
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