Hey Len,
Mine was a T1 manual, under 100 000kms, I sold it in late 2017 BC (before covid) I was asking 13k for it and got close to that. The T3 is the pick of the litter with the 5.6 stroker engine but prices reflect that. Wasn't a fan of the auto T2 with the ESS shifting buttons on the steering wheel.
The XR8's seem to be around the same price as a T1 or 2 despite being a lower spec, however they were a hero car of V8 racing at the time, hence the appeal and price.
The T1 was a real gem, on paper it has around the same power as my XR50, both have been around Wanneroo park (Barbagallo) and the T1 with its Tickford brakes and suspension would spank the FG any day. Then there was the sound of the high revving Windsor.
Anyway I digress

if you can find a nice 'T' got for it.