Thanks Stan!

Thanks for that image above!
Yes, I'm quite aware that these two engines (Ferrari/Alfa) are different - and hence also sounds different. Might not be apparent, but theses things you mention naturally makes a difference. But my angel was more, did the exhaust that had the pulses either merged with an X, or merged in another fashion and then split with a T later to dual exhaust (but hence still merged), a sound for the Alfa engine that was more like the dual exhaust of the originals?

Hearing the differences in the clip I posted, the single exhaust on the Ferrari engine, had more of the "Formula One/Wasp" sound. But the merged exhaust on an Alfa makes it sound more like the dual exhaust sounds of the originals?

And how does an X-pipe exhaust on an Alfa sound, compared to a dual exhaust on an Alfa?
How/where are the two banks merged on the LB exhaust which has a T-later on to split into two exhaust? Is this just to effect the sound, or is this for cars that runs a (singular) turbo, but still wants dual exhausts...?