cutting the pistons

hey i've just come in here searching for some information about cutting the tops off of pistons.....

i have a friend that says her bf is going to cut the tops off of his pistons to lighten them up and make them quicker and he has a v6 mx-6....

i've never heard of anything like this except with deck clearance and i was just wondering because i have mainly only worked on v8's and such so i don't really know too much about the imports yet.... anyone know anything about this

any info appreciated!!

LOL thats nuts,balance would be off,and would lower compression making it slower.