putting a h23 head on on a h22 block wouldn't be smart..

it really depends on ur goals and budget
...h22 blocks can be stroked
to 2.4+.....h23/h22 is the money saving way.

any motor with a high budget will make big numbers.

do sum re-search on the H2B combo...i think is a great combination
and will be way cheaper then kseries swap.