@Strike78 Probably best you didn't fit the KTM headlight in the end.
Also, some LED bulbs fitted in lights not designed for them can disrupt the beam pattern and cause problems with the annual MOT test we have for roadworthyness in the UK, not sure where you're based but most countries in the world have something like this.
On the DTR one of the best modifications is to install a 100/80W halogen bulb which is a lot brighter than stock but doesn't cause an issue with the MOT test. I'm not too familiar with the DTX/RE headlight, @calum does it still require a P45T bulb like the DTR ort is it another fitting like H4 etc.? And do they have AC lighting like the DTR so they can still run a more powerful bulb without flattening the battery?