another 360/408 over heating

they not friends.

Your plug pics are way to far away. To tell.

Timing is read on the part over the electrode. (Ground strap)

Fat at idle is you plugs are black as night on the threads.
Cruze is the porclen part everyone reads.

WOT is down at the base and you need a magnifying glass or cut the plugs to see it.

This is a simple explanation I'm sure YR will expound.