yes another hid question sorry

I'm looking to put hid conversion kit in my 98 x should i buy a kit or retro fit it and i found a website but they have a kit for h4 and 9007 whats the difference?

 

[Bill Kemp]

9007 is the bulb your truck uses. H4 is not. They are different bulbs and are not interchangeable.

 

[98-B.A.Explorer]

thanks hate to order the wrong one 150 bucks is a lot though in time in time