I would like to purchase 8 of these valves (9308Z618C) with view to buying more if they are of good quality. How much are these units and what are the shipping costs to England? Also do you sell the control valve springs and Part No:9308Z617F? If so I would like 8 these aswell. Could you please quote me for 8 valves, 8 springs, 8 plates and delivery to England? Thanks.Many Thanks.