Changing 60/40 to two bucket seats out of 2000 silverado

[94chevy4x4]

I just bought some buckets out of a 2000 silverado and the brackets don't match up and wont fit .. behind the driver seat and passenger seat there is a hump the driver side hump is for clearance for the gas tank but the passenger side is just there .. how can i get these seats to fit??? I have the old seats still so all the old brackets are available