baha
+1y
You shouldn't need shocks if it's just a spindle lift, but for the rear if you add the blocks you will need longer shocks, and also longer ubolts. Also keep an eye on the pinion angle but the blocks should be angled to compensate for that.
Only other things I can think of is keep an eye on the brake line in the rear where it connects to your axel, and the parking break just make sure they arn't put on extra stress due to the lift.
You could always measure to double check but with the spindle lift alone the truck should shit almost level without the blocks.
Good Luck! Can't wait to see pics. Do you have any before pictures?