Need Muffler Sugestions for my trucks subsitute

[lts70]

I am driving my 1983 280zx na while I get my brakes figured out on the 70. I need a new muffler as it is about to fall off, the area where the hanger mounts to the can it is rusted out. I was hoping you guys could give me some advice on what would be a good replacement. I was thinking about something that would make the strait 6 cylinder sound a bit more throaty. The one that is on it now is 15" long and 6-1/2" round, it has 2" coming into the top of the can muffler and offseting to the bottom for the exit/tailpipe. I would like to get more sound but not have it be an annoying rice rocket sound.