Another reference point.
4" IronMan springs, DVS 4" arms (new OEM bushings and hardware of course).
After the installation of the Delta arms, I picked up a driveline vibration similar to the OP. Since there was no clear timeline to get the Wits End DC front shaft, I went with Tom Woods on the recommendation from other 80 owners.
I have to say that I am a bit underwhelmed. While the high speed float vibration is almost completely gone, the low speed vibes are still present. However, this drive shaft has only been installed for a few days and has only 100 miles or so on it, so we'll see what happens over time. The DC and the slip yolk were extremely stiff when installed, so I'm hoping this is temporary.
4" IronMan springs, DVS 4" arms (new OEM bushings and hardware of course).
After the installation of the Delta arms, I picked up a driveline vibration similar to the OP. Since there was no clear timeline to get the Wits End DC front shaft, I went with Tom Woods on the recommendation from other 80 owners.
I have to say that I am a bit underwhelmed. While the high speed float vibration is almost completely gone, the low speed vibes are still present. However, this drive shaft has only been installed for a few days and has only 100 miles or so on it, so we'll see what happens over time. The DC and the slip yolk were extremely stiff when installed, so I'm hoping this is temporary.