Hi im going to change my spark plugs what type is the oem spark plugs on charger 5.7 2016 And how about champion are they good at performance and intervals ?

http://www.pulstar.com/performance/3108-How-Pulstar-Pulse-Plug-Produces-More-Horse-Power-Low-End-Torque.html Jeezus these Pulstars cost 16 a spark plug, plus shipping... total price for my set would be 255 plus shipping... ha! anybody have any thoughts? New gimmick or real technology?