The S-Type V8 aren't a bad car engine wise, the problem with the bores was only on the very early V8s (pre 1999), they are also known for tensioner problems so you want to make sure they have had the modified tensioners fittied as changing the timing chain in the S-Type involves removing the engine due to limited room, on the upside if the tensioners or chains do fail they tend not to bend valves so long as your not travelling at a pace. They are known for rear lower suspension arm bushes and shock absorber bushes, the seat moving back when opening the door is easily avoided by switching it off auto using the switch on the steering column cowling, the gearboxes on the later cars aren't as troublesome as the early cars, they are known for leaking from the sump and multi plug tube but those are easily sorted, the electronic handbrakes can also be troublesome on these, not a big job but fairly pricey. Also the pre 2001 cars are also known for excessive corrosion to the rear subframes.