Our kitchen sink tap needs replacing - it's leaking and not worth repairing. So I thought why not also get a new stainless steel sink fitted. Our old steel sink is 51cm deep x 86cm wide. I've seen a 1&half bowl sink that I'd like (or would I, do I need an extra half bowl?!) but it's slightly bigger 53cm x 88cm. Is it easy to replace the old sink - leaving the worktop in situ?