Heading out to pick up a few things, one of them is a new Ultra Sliverstar bulb. Can you tell me which one it is for the 07 Ultra, H3 - H4 ?. Appreciate it....

Rabid

 

You be needing the H-4 bulb.
Also, you can buy whateverbrand of bulb you like, but from past experance, I have found the PIAA bulbs to be both brighter, and last longer. Yes, a little more pricey, but if you don't have to replace them as often, they pay for themselves in the long run. You can find good prices on them on E-bay.
Tip: Put a little dielectric grease on the prongs of the bulbbefore you plug it in,helps the prongs make good contact.

G wizz