My mate had the 2.8 which I think was bored to a 3.1, that was awesome but had loads of rot on it. A guy at school, his dad had the brooklands one for years which was mint and used daily. Probably like most older cars, depends on the way they are looked after in the previous years. Great fun though both of them.
Never an XR2 though, way to expensive to insure for the power you get.