Exhaust for 83 honda cx650 custom?

I'm looking for exhaust for my 83 honda cx650 custom. All I can hear is the driveshaft. Any advice or recommend any parts to order

A new driveshaft first

I wouldn't mess with changing exhaust on a bike that old, you will open a whole can of worms by freeing up the exhaust causing a leaner running engine that will then need to be rejetted properly and without a kit this can get tedious or expensive to get right.

Maybe it's time to buy a real bike