We replaced all of our R80 bulbs with Philips 9w e27 800 lumen r80 warm white LED's a few years ago. No changes required to light fittings - just unscrewed the old bulbs and screwed in the new LEDs.
We have currently some R80 light bulbs 60W 80 degrees beam angle. I have looked at some LED bulbs on the Bunnings and Mitre 10 websites and they all state 120 or 180 angle beam are those suitable?