Ex headers will work, in fact work better, and give you more options as far as aftermarket exhausts go. You will have to extend your O2 sensors, depending on what you get. If you get a header designed for a 96-90 civic, you will only need to extend your second O2 sensor. If you get a header designed for a 99-00 civic, you will have to extend both.
I believe you will find that DC headers seem to be the best for the price
I believe you will find that DC headers seem to be the best for the price