8 3/4 rear end for 66 Dart

I have a 489 4.10 out of my 70 duster. I rebuilt it a year ago with new gears, bearings and a new clutch style sure grip. I also replaced the crush sleeve with a solid pinion spacer. It has yukon axles with green bearings. The axles are about 7 years old and are 4.5 x 5. The housing is stock with stock perches. No brakes or brake lines. Redlands, CA