Can you have the 1.8 zetec cylinders bored out to 2.0l specs so i could fit forged 2.0 rods and pistons? Or are the walls too thin as they are?

The only reason i ask is due to insurance its cheaper for me to fit a 1.8, have it bored to 2.0 and then turbo-charge it rather than dropping the 2.0l in and changing the internals - dont ask me why it cheaper because i dont quite understand myself....
and i can pickup a 1.8 brand spanker for quite cheap