They are quite different, you will need < 08 GD headlights, for example the headlight plug is accessed from the wheel arch on a GD but via the engine bay on a GE. One other thing, OEM RHD and LHD headlight units have different part codes, whether they have any material difference is not clear, I'd suggest you import from Japan rather than the US to be sure. In addition the US Fit lack the headlamp levelling motor required in the UK.
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TG