I personally think 30 watts would be about it as I'd be a little worried about running 50 watts let alone 80 watts in a factory housing let alone the wiring handling it. If you had your hazards on for a while or brakes on for a while it might melt something. You may find that the 80 watt bulbs would be restricted to 30 watts though the small wiring too.

If I could find out what bulbs fit the fog lights on patrols then I'd look into the 80 watt LEDs for them but for indicators, brakes and parkers I'd be more inclined to stick to 30 watts max.

Cheers Mick