This piston came out of the #1 hole of J.Lo's 230.  Looks like I need a new one.  The lower oil ring is even pinched in the piston.  All I can think of that may have caused this was a wire from a wire brush when I was cleaning off the top of the block and pistons.  This hole had dropped down to 50lbs and the rest are around 100lbs psi on my last compression test. My question is can I buy a single piston for this 230 '48 Dodge engine bored .060 over......and can I buy just one set of rings ?