you have to remove the aus spec bumper / reinforcement + mount
then you will need to drill 2 holes to mount the jspec mounts (its an L bracket)..
the holes aren't there but you can see the outline of them...
remember the aus spec has indicators up front, and parkets on the side of the headlight
the jspecs have indicators on the side and parkers in the headlight
when u convert, u will lose the front indicator so u have to move it to the aus spec parker and then move the aus spec parker to the jspec headlight (if u have some jspec headlights).. and as for the foggies, not sure if they are the same plug... but it'll be different...
if u have the facelift foggies, they have 2 bulbs one for high beam one for low beam... the aus spec foggies are just one bulb...
bit a wiring and mucking around will be required...