He has a blown H23, has a H22A1? Its japaneses, not the A4 american version. Does it have any advantages compared to the American h22? Anyways, its sitting in his garage. We are wondering what are the necessities for the swap. I know h23 trannies bolt up, and you can use h23 ecu, but it wont engage vtec. Anything else we need to know? He will get the ECU when he gets the rest of the cash.