Test Driving 2 V12 Jaguars with Issues in their IRS

I have two V12 Jaguars in for some diagnosis of noises from the rear end. A 1975 Jaguar XJ12 and a 1992 Daimler Double Six. Can i figure out what is wrong with both cars after a test drive? Buy Living with a Classic Merchandise: https://teespring.com/stores/living-w... Follow the projects on Instagram:   / living_with_a_classic   Support the channel:   / livingwithaclassic   Business contact: livingwithaclassic@gmail.com #XJ #XJS #jaguar