Full front end inspection. It has enough miles that anything or everything could be worn. Especially check for looseness or binding in tie rod ends. I think yours has rack and pinion steering. I don't remember off the top of my head how to check for a worn out rack, but I'm sure the info will be here if you search. Ball joints could be done as well. Check by raising one wheel slightly off the ground and working it up and down with a BFP. It should be smooth and not make any funny noises. Then repeat with the other wheel. I just got done working 40 hours in four days, so I'm sure I'm forgetting a few things. Others will probably chime in shortly.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 401,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 26,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.
99 Mazda Miata 183,xxx miles.