That was a super-computer back in the 486 era (ie: circa mid 80's to early 90's) but I'm afraid the only place you'd find these driver files is in some storage building containing old boxes of floppy disks (which probably couldn't be read now) or perhaps the Smithsonian or some other museum. Besides a few small hard drives, floppies and some expensive Iomega media was the only storage medium back then. I'd guess and say your chances are about 1 million to 1 in finding these driver files (but hopefully will be better). Everex is no longer offering files on the internet (at least I wasn't able to find any) and even websites like: http://www.elhvb.com/mobokive/Archive/index.html
no longer carry Everex files.
I may very well have these files on some old floppies I've had in storage for close to 20 years but there's many IF's. The 3 biggest IF's are:
1:If I can find them and
2: if they can still be read and
3: if and when can I find time to go look? I've had failing health since 2005.
I also have about 20 (or so) of the old Iomega 10 gb disks filled with old driver files but I don't know if there's any device left in this world to read them or not and again I don't know for sure that I have these files. I probably have some cards in storage that would work in that classic but again it's been too many years since I had hands-on with any of those old relics. I've gotten old since then and don't have memory like I used to.
I'd love to help just for the sakes of saying I had a hand at restoring a classic computer. Perhaps some other old-timer or classic restorer will be able to help you out.
I did some Googling for them and was only able to come up with these links that might offer some assistance down the road:
Good luck with the restore job. I hope to see it (or one like it) in a computer museum or private collection before I leave this world.