My son bought 89 civic d2db2 fuel injected motor and found a zc carburated motor. He was told to convert it over to the fuel injected all he had to do was change the intake from his old motor and put it on the new motor. My question is what do you do with the fuel pump that is on the head of the new motor. The old head which is no good has is blocked where the fuel pump is on the new one.