well i decided to go with zzp 1.9 rocker kit and new lifters im thinking that the roller bearing is from a lifter if not from those two items then what as in my previous post the gtp rocker same gm part # for regal gs and gtp lifter no apparently first design and second when i get the stuff i ordered ill tear it down and see whats going on by the way the needle bearing is magnetic the gtp bearings are not