I think the gear box is beginning to show wear as judders on hard exceleration.
Recently replaced water pump.
Considering it's mileage this car is surprisingly sound, drivers seat showing minor wear (leather) which is strange as I have seen cars with a lot less miles with tattier interiors. body work is also remarkably good. the quality of these cars is so variable.
Performance is very good, it just keeps going.
Replacement suspension (for Carlton GSI units I suspect) has made the car firmer than it would have been originally.
I noted on your review for your Senator you called it a "Gas Guzzler", what kind of MPG where you expecting from a 3 litre 24 valve engine?