thought i wold do a tune up on the 86 f150 with the 300 6 and when i changed all the plugs i got to my last one and snap the ceramic broke and the head of the spark plug stripped out please any info would be great

 

i spent 60 bucks in special tools but no luck so i took the head off punched out the ceramic from the inside then i broke it loose with an easy out,then i slammed a 19mm socket on top of the nut and a 18 braker bar finally got it out. im thinking of putting this plug in a case and put it on my mantle