As a unibody car, the Bugeye is quite tight. With just three body panels (two doors and a nose), there are fewer openings and fewer moving pieces. So once these cars are well-sorted, they don’t rattle very much.
In fact, many of the rattles we eradicate are loose items in the boot, clanging exhaust pipes, wiggly door latches and handles, and occasionally a buzzing hydraulic line improperly secured to sheet metal.
This particular car had a noise caused by something we have not seen before. A prior owner welded a cross bar under the back deck, perhaps to keep the body straight while restoration was in progress, and no one ever bothered removing that bar once the car was back on the road. So this rattle has persisted, until we found it this week, and cut out the bar. Thus, another rattle is eradicated!