Have a 93 Civic Ex with a D16Z6 and a hole in the block. Also have access to a low mileage D15B7 with tranny out of a 95 Civic Lx. I know that motor and tranny will bolt up. But being a noob I don't know about the ECU or the axles. The existing ECU is a P28. Do I need the ECU out of the 95 to make this work? I believe through researching this site that the 93 has a P20/B000 tranny and the 95 has a P20/A000 with final drive being 4.250 compared to 4.058. Any info would be of great value. Thanks,Whistler