so I have a leaky crank seal, and I was wonering should I just go ahead and get a full timing belt/ water pump replacment while they are down there? I know I should go oem with this so should I buy an oe timing belt and water pump first then take it to a mechanic? and could someone explain to me whats all included in this kit http://item.mobileweb.ebay.com/viewi...d=860136264019 should i buy this too? or does a mechanic use a decent set of gaskets and seals?