I got a plug and it fits perfect. Unfortunately, now my tuck doesn't run as well. 8 times out of 10 it will idle fine at a stop light. The other two, I'll push in the clutch, motor will come down to idle; then out of no where, the RPM's will drop. You can hear the advance try to catch it and it quits. Touch the starter and she fires up again.
I was at a car show today and during the idling drive through the park to my spot, it would do the same thing.
All because of the plug? There is no rhyme or reason.
Vacuum leak somewhere else maybe?
