I went on to majestic Honda to find a oem distributor for my b16 and I have an obd1 harness in my eg but I found several different part numbers 30100-PEO-672, 30100-PA6-026 (td 23c), 30100-PA6-684 (td 20c), 30100-PD2-664 (td 16k), 30100-PD2-676 (td 17k). What is the difference and which one should I buy?

 

I do have an obd1 to obd2 jumper harness

 

If everything was obd1 you'd use a td44u or a td68u distributor.