lifter ?

ok found a set of lifters and was doing some research. the lifters i found were ac part # 17122490. i read that they are stock ls2 lifters and also that they were ls9/cts-v lifters and also on sdparts page it says l92 lifters. whats the trueth. are they good lifters for high rpm? i found this in a article in a super chevy mag were they were doing upgrades to the 2010 camaro. with so much info on the net some of it is bound to be incorect just courious

We installed new high-rev lifters from AC Delco (PN 17122490), which are really LS9/CTS-V lifters. Also notice the flat (no veins) lifter valley cover (from an LS2) to replace of the former DOD (Displacement On Demand) valley cover. We needed both the LS9 lifters and the LS2 valley cover to eliminate the DOD and valve float at high rpm (6,300-7,000 rpm