That would look like a Triumph 'peashooter,' yes?
Back in the '70's I had a Ford van w/a 351 Windsor & I loved the exhaust note when I installed some Thrush side-mount exhausts. You heard the note of the engine but it wasn't annoyingly-loud, and at certain rpm's the harmonics of the duals made it sound like a Chris-Craft inboard or a Ford flathead w/straight pipes, kind of a distinct 'burble'. The right exhaust note can change your enjoyment of a car, truck, or bike significantly.
I just got my bike working again after my 'dyno dilemma' & have acquired some misc. exhaust parts to mix/match. All it takes is $ or roping my friend into helping me do the TIG work. I might ask a local muffler shop fab-up connectors for several cans I have to a Kerker 4/1 header set, I am wondering about making a different mid-pipe to see if I can avoid cutting my centerstand frame mounts.