i did my swap and i got a bit more then 6. no cool vtec cover either=[. Bolt ons would be the same as the A1 head, just overall you'll have more power because of the extra HP from the head. (ex. you'll get 10hp from a header of a a1 and 10hp from a a2 with the same header JUST AN examle). like everyone said before now you can get crower cams also.