I'm swapping in a jdm b16a and I've got the basic like headers, intake and exhaust. I'm going to upgrade the fuel pump to a 255 lph and I want your guys opinion on what type of injectors to run. I'm planning to run the 440cc/450cc injectors, and my questions are:

1. Whats the difference between high/low impedance?
2. Will I need a resistor or pigtails?
3. Where can I find a set of 440cc/450cc injectors?
4. Whats the difference between obd0 and obd1 injectors?
5. Can I just purchase a set of Precision or RC 440/450cc injectors (high impedance) and plug it in and go without the hassle of the resistor?

I really don't want to mess with the resistor, but if it comes down to it......I guess I'll do it. Thank you guys in advance......