Cisco EOL Support

Hey everyone,
I was just wondering what types of support besides hardware support that anyone may have been able to acquire for EOL cisco gear, specifically 7600 gear. We can get NBD support for hardware failure pretty easily, I was just wondering if anyone has had any experience with any further support. Not IOS upgrades obviously, but potentially troubleshooting support. With the EOL dates coming up in 2021 we’ve been tasked to “see what’s out there”.