Look out for loud gearboxes mainshaft I.e when the cars running put the clutch in and listen then out, people try to say it's the clutch realese bearing but it's actually the gearbox mainshaft. If it's really bad gone you will hear it when driving at low speeds. It's a common k20 problem. Full service history is a must, as said water In the boot. Other then that absolutly cracking cars but handling is not so good I found.