Wiseco Standard Sized Pistons

I'm looking at some stadard sized pistons for my 420A from Wiseco. What machine work might be involved, if any? Thanks!

I know this is a stupid question, but I've never messed with the internals. Thanks

I've done some research and found that there would not be any machine work with standard sized pistons... Incase anybody was interested.

I don't know how familiar you are with engine internals, but if you are building the bottom end yourself make sure you check things like bearing clearance, ring gap, piston clearance, and a lot of stuff I can't remember right now. I'd check the block you are using to make sure it doesn't need to be rebored and honed before buying the pistons.