The XJR line continued in 1997 with the final revision of the Mark II series line, named the X308 (still with me?). The engine was now a supercharged V8, a considerable improvement. It could make 370 horsepower.
2002 was a special year for the XJR. The XJR 100 was sold in very limited numbers that year. In fact, only 500 made it to dealers. This was a triple black model with alloy sport wheels, by far the meanest Jaguar built in 2002. The interior did feature red badges and some red stitching.
The XJR continues today as the performance version of the XJ lineup.
You can find some of these cars making it to the used car market, although not many. They have never sold in very high numbers, as they were mostly produced in limited numbers. There were some listed on eBay the last time I checked, but who knows if there are there now.