Yes thats a normal BDR side pipe muffler. Two 7/8" glass pack tubes. I switched to Flowmaster Slimline mufflers a few years ago and unfortunately they don't make them any more. There are threads on this site detailing that.
https://www.holley.com/products/disc...parts/13524320
If you want to stay all stainless.
Your best bet is a set of stainless side pipes from Gas-n (advertises on this site)
https://www.gas-n.com/
Or a set of Porter Standard length 26" x 3" or 3.5" in 304 stainless. Front/rear caps are a bit off for shape but that also depends on which vintage Cobra photos you compare it to.
USA made.
https://portermufflers.com/collectio...13933683671098