Hello bimmer dreamers and gearheads, I planning on trying to change both my themostat and water pump at the next DIY. The reason for this boogle is that the last 2007 DIY is only 4 hours long. Can both the thermostat and water pump be reasonably accomplished in under 4 hours or should I prefer one over the other and if so, which one, neither has gone bad. Thanks for all of your inputs. Happy Motoring...