Have the whole kit fitted, you'll kick yourself round the park if the water pump fails virtually wrecking the engine.

Have you phoned around the (family preferably) dealers within say 50 miles for a quote, that's what i shall do with our Citroen.

Then once you have the ball park figure, get a price from an indy that you trust to stand by his work, preferably someone highly regarded, then it's decision time.

Unless a huge difference i'll be using a main dealer....now which one.