Kape17 Welcome to the forum. Lever spindle gaskets, (there are 2) are a standard part available from any Espresso parts supplier. Cam itself shouldn’t be worn, what makes you think it is?
The fluidotech gear pump magnet is again a standard part you can order, cheaper than getting it shipped from Italy. Your parts supplier may not even be charged for it for a pump of that vintage, as it was during the time when fluid o tech realised they had problems with some of the pump magnets in that year (incorrectly potted).