The kit came from Classic Industries, but was part of a larger order (I wouldn't buy cheap items individually as they add an international fee)
You might be able to find a similar one over here from somewhere like Carnosuer(sp!) or similar.
Failing that, I know where we can buy all the components to make a custom fit version, probably for less than £40.
The bulbs are standard halogen H4's - they have 3 prongs on the back.