John Stanley takes a look at two beautiful British luxury sports cars - the Aston Martin DB7 and the Jaguar XK8, and he'll be testing them for their performance and handling, as well as seeing how practical they are. The XK8 comes with a monstrous 4.0L Supercharged V8 engine which produces 370bhp, where as the DB7 has a 3.2L Supercharged V8, and it produces 335bhp.