The website that led me down that hole was the one from "spacedrone808" [1] who appeared regularly in /r/windows7 mod posts and issue trackers.
There's also the snappy driver installer project [2] which shares a 44GB torrent with all kinds of drivers, from SATA controllers to NIC to GPU. There's also driverpacks which is sometimes down, sometimes not. In the web archive of either of those you can still find the torrent links though.
Oh and there's driveroff [4] which led me down the rabbit hole of Russian hacking communities that backport software to win7, which is amazing to see that there's this isolated modding community on the internet that uses hardcore win7 modded variants, with self-built firewall software, backported hash file databases for antivirus tools etc.