My ears were burning. AHR (me) has tons of options to upgrade your light output and also add some cool aesthetics to your headlight.
Check out:
Affordable HID Retrofitting - Home or
https://www.facebook.com/AffordableHIDRetrofitting
Contact us via: [email protected]
Why not just get a nice set of metric hex keys, or hex sockets? You will use them in the future. From memory, I want to say that the size that you need is 4mm, but 5mm, 6mm are also popular hardware sizes.
Generally, you're going to be looking at a 2.5" projector. Currently The Retrofit Source has the D2S 3.0, however it is much too long to fit in the housing without modification.
We are using the D2S 2.0, which has a 2.5" lens, and small enough to fit without needing to modify the housing too much.