Small update today.
Managed to loan a Dremel as I've failed to split them reflectors.
A bit messy but did the job well.
Here's a pic of trial fitment of the PCB
You can see the PCB when they are not switched on so I'm considering to include the original silver reflector from the DRL that I had modified, to keep it tidy when it's switched off.
This means more Dremel'ing tomorrow on the reflector to fit the silver reflector in.
Here's a pic of the LEDs
Dark test
Will be sorting out the other reflector tomorrow.
Edit: I wish there are longer PCB out there that I can use as donor but unfortunately this is the only dual function DRL I can find on EBay. This is a 8 LEDs set, I going a 14 LEDs set will be much better to fill up the reflectors from top to bottom.