how could a stock Jeep have the living *@%$ beat out of it?

I took off my Head to put a new Head gasket on while I had everything tore down and out of the way only to realize that my engine had been bored 50 over and had concerning slop between the piston and cylinder. “Aww Shit” was an understatement. Looks like a new engine is at the top of my parts list.