Hey need advice from the pro's again

98 T4R 3.4 sparkplugs. Which plugs should i use that are stock or better? Also coils and plugs.. Steer me in the right direction.. Thanks all

 

Well since you have 3.4L the ignition is a lost spark design which means that the spark plugs fire twice for each combustion cycle because while the coil that is located on the one spark plug maybe on a power stroke, the wired cousin on the other side is doing an arc in a cylinder that is not. So my recommendation would be to get spark plugs that you need to change at a regular service interval as the electrodes are going to wear as they see twice the duty cycle. Until you know how they last it is anyone's guess as to longevity. The sharp edges to the electrodes are what help the spark to propagate across the air gap. Unfortunately it is those very sharp edges that spew material into the chamber as the electrodes are consumed when the arc is generated. I'd stick with cheap copper plugs and inspect and/or replace at 15,000 miles.