I want to put some higher gears in my 8.25 . It's a 71 Fury warmed over 360. It currently has 2.??? Something gears . Desert gears . I would like to do the overdrive thing but that's another topic. Is there any carrier change with the gear change or will the carrier I have accept the sure grip and and gear ratio ? I believe the 8.75 has diffrent carriers for different gear sets. Thank you in advanced.