I just got the smoked tsuru conversion. Do they take the OEM sentra headlamps? Or where can I get H4 ones? Anyone?

they take H4/9003

Go to Autozone, they sell a high temp H4 harness that you can hard wire into your car as long as you are confidant in your electrical skills. Drop me a pm for further info if you need it, and I can also give you some insight on the corners and the other lights inside the headlight housing, as it takes some "creative" wiring.