I have seen that kit advertised down here.. As a big chunk of NZ's autos are used Jap imports,,we have a lot of plastic headlamp lenses going the same way..Some have a real yellowish tinge to them,,and they look terrible..It is also a Warrant of Fitness requirement down here to have clear lenses..Your headlamps,Steve,,probably would have failed a WoF test.. A guy I buy a lot of my sandpaper,filler,etc,from,,has imported some other stuff,,a similar treatment,from somewhere in the US,,and reconditions those plastic lenses..Doesa really good job..Didnt know that they had to be done after the first time,though..Must be a bad grade of plastic.....But,maybe good for the guy who charges to redo them...