440 Jensen Interceptor Exhaust Crossover / Balance Pipe

VOETOM said
See if you can find a Dr. Gas X-type Crossover around there. I know he sold some overseas. They will smooth the exhaust tone but not sure the owner will be able to tell inside as much. Maybe I missed it but what mufflers do they use?

Thanks, I’ll try and report back re mufflers next week once I’m back at work and can take a look at the car.