i have downlights i may be able to do a write up although led ones are harder as to put them in the roof u need fiberglassing or they have to be in the pillars the normal ones like mine fit in the roof no worries
i got ones from autobarn the LED ones & they screw in no worries at all just need to run the wires i did it with roof in which was pretty diffuclut or you could take the roof out
not realy sure how i did it cause i was plastered by the time i was done but this could help (doubt it)
drunkin updates
10 pack of jim beam + half a day = lights done