Somebody actually wants H4 headlights. I'm intrigued.........
Possibilities include:
1/ You've had a prang and want to repair your T6 as cheaply as possible.
2/ You're going to experiment with some Xenon / LED upgrade and you want to keep your van on the road.
3/ World War 3 is upon us and, thinking of WW2, you want headlights so dim that they couldn't guide enemy bombers onto target.