Plugs don't look bad. You'd probably have better driveability with the NGK ZFR5Ns (remember, no ring gaskets).
Mopar electronic ignition is better than breaker points, but you can
do a whole lot
better and an upgrade would pay benefits in how the car runs. Whether or not you upgrade, read and follow the suggestions in
this long (but worthwhile) thread.
Your plug gaps are too small even for the relatively weak Mopar electronic ignition. If you stay with that ignition, run 0.035".
93-octane gasoline is not "the best rating". It is not
better than lower octane grades, just
different in exactly one way: it's more resistant to ping (preignition). If the engine doesn't ping on mid-test or regular, there is
no advantage to high-test. The only exception is if you live one of the few places where you can still buy one grade of gasoline without ethanol in it, and that grade is the highest octane offered.
