Need front brakes - suggestions welcome

Make and model of chassis
CRG (GP Racing GP6) 2008

I need help with
Putting together a front brake setup

This is currently without front brakes, but I need to add them to move up from a 80cc shifter to anything else. The current front axles have the mounts for calipers spaced at 63.8mm center to center.

What current setups will work with this? And if there are none, what complete new front brake axles, etc can drop in?

Thanks in advance - lots of web searching has not helped much.