Restore cPanel/WHM from a corrupted drive

[I didn't see this posted, so I don't know if it went through or if the original is awaiting approval or something like that. If the latter, please go ahead and delete this one.] We have a server with a corrupted drive, but using RIP we were able to get most of the old filesystem (minus /boot) safely backed up. Unfortunately, we did not have cPanel backups on this server. We attempted the steps outlined in this third-party guide: [url=http://www.cpanelkb.net/restore-cpanel-server-from-corrupted-drive/]Restore cpanel server from corrupted drive - cPanel KnowledgeBase However, this left us with a seemingly broken system that was unable to load WHM or cPanel due to "wrong ELFCLASS" (the previous system was CentOS 4.9 32-bit with cPanel 11.34.2.8, the current system is CentOS 6.5 64-bit with latest cPanel). We've now installed a fresh cPanel/WHM (again), and we have the files available, but I would like to ask for advice on how we should proceed. We have advised the customer about the importance of backups, but of course hindsight is 20/20, and we'd like to restore the data if at all possible. Any help/advice would be appreciated. Regards, Sarteck