I just bought a D16Z6 and im about to put it into my 1990 civic hatch. My old motor(D16A6) had a lot of wiring when i was getting ready to take it out. Im using the old transmisions on my Z6 because the transmission it came with is hydraulic and my car is cable. but other than that i wanted to know if the wiring will still be the same for the new motor and if my old ECU will work or if i need to get the p26 i think it is (correct me if i am wrong) before it can drive. Among other things i have to replace the head gasket on the Z6 and i was just wondering if anyone had any advice to help me in the process. We already got the old motor out so is there any prep work i should do before i put the new motor in? sorry if its long but this is my first motor swap and im still fairly new to the car world.