You might want to look into the specifications on the engine as well. The 2.0 may have a lower compression ratio w/ forged internals to handle the boost provided by the supercharger, while the 2.2 block may not. If the blocks/ cranks are identical I'd suggest taking the crank/rods out of the 2 liter block and getting 2.2 pistons that will provide a similar compression ratio, maybe pistons that are for sale for turbo equipped Cavaliers or something like that.

just my $.02