[VintageLambo] Espada - 350/400 Part interchange

Hi As if my oil cooler problems are not enough, I saw an ad in our local free sheet for a rolling shell Espada S3 for very little money. Went to see the car, not a lot left as the engine, box, bonnet, glass all gone but all suspension and brake parts are there and in good condition - much of it looks like it would fit 400/350 - does anybody know for sure? Unusually also the car has a completely rust free shell - apparently it was in the desert for many years. Thanks! Clive