Here's my scenario.. I have a 93' DX hatch w/ auto tranny. Will a JDM D15b vtec drop right in and work w/ the current tranny? I have reasons for not wanting to go manual as the car is (believe it or not) used in rally events and the auto saves me from reaching down to shift about 500 times per event. Also, can I use a p28-a51 usdm ecu for an auto d16z6? I've read some forums but there always seems to be 3-4 different answers for each question. Any help would be awesome as my d15b7 is getting tired and I need replacement options. Also how much wiring would I have to for the vtec and the 4 wire 02 sensor?