The weight is a 10lb damper that doesnt work anymore if you change the gear ratio. I take em off but keep the pinion snubber. You'll need two 3/8 bolts about 1.5inches long to reattach the snubber.
The yoke can be put on 4 ways so you'll just have to see if it vibrates after install. If it does, then shift it one position and try again. If the vibration wont stop, get your driveshaft balanced if you have aluminum, or get the Ford Motorsport aluminum shaft.
The yoke can be put on 4 ways so you'll just have to see if it vibrates after install. If it does, then shift it one position and try again. If the vibration wont stop, get your driveshaft balanced if you have aluminum, or get the Ford Motorsport aluminum shaft.