need help with my b18c1

[d2000honda]

I just purchase a '97 b18c1 gsr with type r pistons. (more compression) Can I use the same harness of my ex with the c18c1. How can I know if I have obd1 or obd2

 

[97CTR]

I'm guessing from your name that you have a 2000 ex? If so then you can use the ex harness and you are obd2b. Your motor is obd2a