My 99 Hemi, IE PRo Stock Hemi had needle bearing. We were just on the dyno Wednesday at a Pro Stock shop and they have needle bearing rockers as well, so I guess I know this for a fact. This is a team that has won including in 2016. As with mine they were WW Rockers and all had needles, they seem to be the rocker many teams run from what I've seen anyway. These were engines from Johnson(hemi) and Elite(drce). I have seen some steel rockers on Dodge stuff to but usually only on one side and they had needle bearings as well. So I guess the statement about pro stock not using them is not quite 100% correct.