You're going to have trouble finding a G-Sync Monitor with 1080p. I see it more common in the higher resolutions. Also, if you have two 1080'S you should definitely look into getting a 2k monitor. But, if you're deadset on just 1080 p, maybe look here
https://www.monitornerds.com/aoc-g2460pg-144hz-1080p-monitor-gsync-2016/