new light/clocks conversion

hi guys havent been here for a while coz shes all wrapped up in the garage for the cold spell not done any mods this winter and was just wondering if anyone has and how hard it is to repace my 2005 headlight and clocks to the newer model?????
any help apriciated fanks

Yes it has been done before:

viewtopic.php?t=13150
viewtopic.php?t=5291

Probably a few other threads but think that these will be adequate enough.