the a1 is the base b18.. only 130 at the crank same as ztec. the b16 head i dont think will actually raise his compression by much. but it will give him vtec, i am assuming thats the main reason. he should give him only around 15 hp though.
thing you have to remember though is he is still much lighter than you. sorry to say but even with the b18a1 he will still probably beat you. the honda motors respond so much better to bolt on's as they have better flow in the head than our motors.
2003 Focus Sedan - Sold but not forgotten
2014 Mustang V6 - Current