quick question i have a set of new in the box 1.6 roller rockers not sure if they're for production heads or stock style heads? does T&D make roller rockers for TA ? the box shows T&D but when i open the box on the red rocker it's stamped TA 1.60 and on the ends says DR 2499? i cant find a p# to see if theyre good on stock style heads or are they for production heads i'll post some pics.. they look like stock style to me but just want to be sure!