I guessed I missed the point here, which is to hobble yourself by running a cheap piston, and then building around that handicap.
Answer, because some people simply do not have the money to do a full and total rebuild. Isn't that what the low compresion question is about Moper?
With this statment alone, you shove the person with no money into a corner and make fun of him as being a cripple and shouldnt bother trying to have fun and make power with his engine.
I guess, "Broke/low income guys should not apply/subscribe to adding extra power to there engines."
Is the new answer, "If ya can't afford to rebuild the MoPar, go run a cheap *** Chevy?"