can anyone advise me,is there 2 different sizes of u/j for the propshaft,im suspecting ive got a knackered one due to excess vibration,when i phoned up to order some i was told there were 2 sizes 75mm and 82mm which would be easy to measure if the prop was stripped down of the car,but as im wanting to order them first,im stumped,any help or advice would be apreciated,it,s a range rover vogue v8 4.6 2000 model.