By stock loom, did you mean the factory loom without relays?!
Can it actually handle amps that high?
Where did you get the lenses from? 'Cos the stock headlamps are sealed ones.
I'm guessing they are high temp resistant?
You can do the conversion by buying the raw material from Jcar electronics. The conduit, relay, higher amp wires & connectors shouldn't cost much. We only have to wire it up between the battery & headlamps, don't we?
I reckon it can be done fairly quickly if we have the raw material ready.
I already have all the bits and pieces in a box, except globes.(I'm waiting for them to arrive).
Of course, a better, high temp resistance lens make a real difference I think.
I'm bit concerned whether the higher wattage globes will cook the lenses.
I'm starting with 100w ones, and see how it goes.