292 will sound the same. Here's what mine sounded like with dual exhaust. Flowmaster 40 series.
https://www.youtube.com/watch?v=ifh4eU5bUAo
https://www.youtube.com/watch?v=Nw_9eGLhhzk
On a stock 292 with a 4 barrel carb and intake, headers, I went with 2.25 straight duals.
On a hopped up 292 I would go with 2.5 and maybe an x-pipe....never got the reason for it. lol