plug recommendations?
IMO stock mopars like Champions.
Everything likes Champions. When I get paid to do a tune up, I pick the plug.
There are two issues with Champions. Number one is guys running a different brand of plug and using a cross reference to pick a Champion. That's a bad idea. Cross reference charts are essentially a guessing game at best. Look in the catalog and pick the plug for your application. If you are looking for a racing plug, get on the phone with someone who knows the plug line.
The second issue is Champion has always used a softer center wire than other plug manufacturers. That means they don't last as long. 5k on a set of plugs and I dump them. Racing plugs get 20-30 passes and hit the can.
The reason for the softer center wire is still argued amongst electrical needs to this day and it has to do with how the flame actually starts. The softer core wire allows the flame to build easier. But it wears out quicker.
If you are a cheap screw and think plugs should last 50k then buy other than a Champion.