well i been looking around at leveling and i notice that some kits for the rear blocks say they have built in pinion angle adjustment which would help avoid driveline issue, the only one i found that had this was ready lift rear block kits

so for anyone who has any other rear block kits, have you had any issues

or know if other bands also have blocks that help with pinion angle

 

What year is your truck? Also if you are leveling your truck, you don't need new blocks in the back. You want a spacer up front or the Billstein shocks.
Even if you added a 2 inch block pinion angle is not that bad on a 5.5 box. You may need a drive line spacer to ensure the slip yolk sits in it's stock position. I can post a pic if you need.

 

I would like bilsteins but I was think of just doing 2.5 front and rear block should be about dead level on my stx

 

You should check your measurements. Usually the billsteins will make the truck sit level. I would stay away from blocks and get an add a leaf or get the springs rearched with a properly installed extra leaf.