Hid size question

[mk frilla]

I'm looking to buy a kit and found one that has many different options for the bulb size, kind of confused as to which one I would want. I've searched the forums and found that the correct size for the headlights are 9007 for a 2000 grand prix. The 3 options available in 9007 are as follows: 9007/9004/HB5 Flex Bixenon, 9007/9004/HB5 Single, and 9007/9004/HB5 Hi/Lo Halogen. Can anyone explain to me which bulb is the one that I would want to get, not too sure the difference between the three options available. Thanks

 

[MoarkatsINmuhtrailer]

The single option.

 

[DirtDog]

^^^^ that.

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[mk frilla]

Thank you very much for the quick response guys appreciate it.