Sounds like a a complete refurbishment of the entire fuels system is imminent and requisite. That probably also includes the carbs. Lord knows what else is required as well. As Ivan notes the Facet pumps are fine but need a higher amperage delivery which has caused problems on Ghiblis. I don't know about Khamsins. But the tires OMG ... so all the rubber such as belts will probably need replacement. If the basic engine is good then you can probably get it running again after addressing all the supporting systems but don't be surprised if many seals and such like head gaskets soon fail. It sounds like a low mileage car but one hell of a lot of differed maintenance.