If yours is a SWB you could fit the 11" front drums off a LWB as they have twin leading cylinders rather than a single cylinder. I have this arrangement on my SWB, the brakes are now excellent (well, compared to what they were!). You need the backplate, drums, shoes, cylinders and the 2 short lengths of brake pipe that link the cylinders on each hub. Shoes & cylinders for an axle set you ought to be able to get new from Paddocks for about £30-£35 ish, pick up the drums and backplates from a scrapper ... MUCH cheaper than a later servo & master cylinder. However THOROUGHLY recommend proper check & adjustment, desparately easy and normally good results.