We have had the Mk1 water pump and crankshaft pulleys finaly cnc machined from the original type castings we had cast late last year. These are exact and work on all Mk1s with 289 and Gurney Weslake engines as well as most later engines with a 3 bolt balancer. We have some 3 bolt balancers in stock for both internal and external balance. These are sold in pairs or seperately. The part numbers are Gt40P-3-3509 for the water pump and GT40P-3-3646 for the crankshaft and we also offer the correct bolt kits as well.