[Rick Parker]

The carrier with the different sized bearings is aptly named a Daytona Pinion Carrier which is designed to carry more torque than the one which uses the same sized bearings on each end, it originated in Cup Racing many years ago. It provides better support for the end of the pinion with the gear. Be glad you have it. You better have a BIG torque wrench and a Bigger vise. You'll have to resize the spacer. If you're racing be sure to use the solid spacer. Setup will take more time. Start with .488 or longer so the bearings are not damaged when you torque the nut to set the preload. If you're racing, good idea to get the Viton seal (Ford Racing, maybe other suppliers too) as it will take more heat than a standrd replacement one. Use anti seize on the threads and set the torque wrench to 240-260 lbs. Without anti seize 160 lbs, but it is harder on the threads. Do not reuse the pinion nut you took off. Try Autozone if they are in your area, Timken is what they stock.