New headlight units for a 2006 ST - or are there options?

[OzzieNorm]

The story with my 2006 Patrol ST wagon is that it has spent its life as a work horse on a coal mine. 'Hard life' as various mechanical specialists now inform me...

I took it into the ACT Motor Registry for a roadworthy inspection earlier this week. NINE defects... Many are minor and easily remedied (like one brake light is not working [the fog lamp light] even though there are 4 other brake lights that work fine... Perfection!)

This post is about the headlights: "BOTH HEADLIGHTS - POOR BEAM PATTERN".

This may be because the 'outer surface' of each headlamp unit has been 'sand blasted' by constant coal dust exposure - or the reflector has deteriorated from coal dust and condensation...

New headlight assemblies maybe $555 plus (each).

What are the options for new headlights? I have tried some wreckers - but the head lights are either smashed or gone...

I have heard of some product that strips the outer layer of the headlamp 'glass' - removing the 'fog' and rendering the glass 'clear/clean'. That could be a good start... Anyone know about such a product?

Secondly, how might I go about cleaning/buffing the reflectors?

[As a third (left field) option, might an upgrade to +50% globes or a HID conversion make the light pattern more 'acceptable' to the inspectors?]

What do y'all reckon?
Thanks.