i want to swap a b18c5 into my 93 del sol, but i am not sure about something....the car is already obd1, and i wanna keep it that way, and i was looking at the b18c5 motor and the 96-97 spec is 600 cheaper then the 98-00...now the question that i have is, what is the difference in the 2 motors? is one obd1 and the other obd2?idk...i have done research and cant find much of anything that i can use to distinguish the 2 motors....if anyone can please help me with info, it would be much appreciated..thx