Not really sure where else to check this, so any help would be appreciated. I have an 84 K10 Custom Deluxe, 305 with HD 4 speed manual. I want to upgrade to 3.73 gears. I have a nice used set that came out of my 96 Impala SS, which is also an 8.5" (8.6" on the box, IDK why) 10 bolt. Will...