A couple of things to note that aren't in that thread:
- if you are retaining the OE bulb, you are limited by the bulb length for the amount you can trim the lens.
- you can gain a little extra bulb clearance by drilling the back where the roundel mounts.
- test the glue you use.
I used a glue that worked great but reacted with the white backing plate & it fogged the inside of the lens.
(had to take apart & re-do)
- I tried LED but couldn't get it to stop throwing "lamp out" even with a resistor.
(there may be better LED options now)
..........................................
...sorry for the topic left turn P-Man
