be careful i did the same swap and got sttuck with the coolant tube on the back of the motor. My D15 had two nipples on the back while the D16 has only one. you have to swap the tube over from the D15 to the D16. you don't have to change NE thing else, it should work with the OBDI computer, the crank sensor is unused. you should change over the intake and exhaust manifolds, and i realized that i should have kept the D15 trans: has shorter gears (better accel.) but u don't care about that.