330CC JE Forged piston Kit for $320 is it worth it? and what kind of work does it involve?

 

has anyone done a big bore kit?

 

i did a 350 on my 300ex 97 and yea i got a head with it so it wasent bad but my buddy's 200 was a pain in the *** it took us 3hours and it was only a 250 cause you have to drill out the head it sucked so if it comes with a new head i would get it but if it doesn't don't if you drill to big you'll ruin your quad