Hey Guys,
As the title says I'm getting vibration when I travel above about 50-60km/h. I'm assuming its the uni joints. Have taken the tailshaft out and I have the non serviceable model

I found some sweet info in the wiki about rockford driveline. On their site they have part no. 430-9 which is listed as being Datsun 1200 - 1971-73 and Datsun B210 1974-82. My car is a 1974 1200 Ute is this part correct for this? Also do you think this is the issue?

I drove it the other day with some weight in the back, the vibration was still there but seemed less and seemed to come on later (maybe 70-80km/h).

Thanks