Yeah, but 50K kilometers is like 31K miles. Likely this one was in "storage" for a long time. Hopefully it was stored indoors for 33 of the 36 years and only evicted from its garage when they bought a more valuable classic car. If its not terribly rusty and the trim and interior has survived and cleans up well, then its more valuable as a stock restoration and modification would just be throwing money away.
Igniter and most everything else under hood hasn't been heat-cycled very much at all. Electronics are going to be the least of the worries. The biggest thing our OP already knows is the fuel pump is of course toast from the accumulated rust inside the tank. Tank will need to be dropped, cleaned, inspected and perhaps some work done to reseal the tank along with back-flushing the lines, a new fuel filter and possibly injector cleaning.
Other than that, I bet its going to need hydraulic work; a brake master cylinder, caliper rebuilds and clutch master and slave cylinders. Those will have rusted up just like the fuel tank. Hopefully its got the correct Toyota red coolant and it won't have any cooling system corrosion, but that's a remote possibility. Outside of that it will be more minor stuff like the front and rear main seals will have deteriorated from extended periods of no lubrication followed by dry starts. If he starts driving it fairly regularly, he can expect it will start to leak from many different places. Since classic cars don't get driven much, most people live with the drips unless its leaking profusely. None of these should present issues getting parts, tho he may have to purchase an entire engine gasket "set" in order to get one particular gasket.
One more thing to inspect since its been outside storage is less about the car but what's in the car. Look for accumulation of debris in the sunroof drain pan and hoses, in the cowl drain area, and in the area behind the front fenders between the liner and the door. Leaves and dirt get trapped, decay, retain moisture and promote rust. Clean all that out, including taking the bolts loose at the bottoms of the fenders to dump everything that has accumulated in there. Take out the cowl panel and clean out from under it. Also watch out for the work of rodents camping out in the car over winter. They can store hundreds of pounds of nuts and seeds in the car, chew on wires, and they're not housebroken, they don't clean up after themselves.