Exhaust Sound question

[Nutela]

Hey guys, trying to achieve this exact same exhaust sound on a CB750 Seven Fifty.
Linking the video below:

They YT channel says that Justin or by his Instagram name @highfiveimdown is the one who build the bike.
I've tried to contact him but his IG account is not responsive.
Does anyone know this builder so I can know about his build?
If not, does anyone know how to achieve that sound?
I'm really looking forward to your help : )

Thank you!

 

[sheekeebut]

I can't really tell by the quality of your video, but it appears to be a sound typical of pipes with almost no baffling and with short resonator length.
Huh, lo and behold:
https://www.classifiedmoto.com/motorcycles/daryls-bike/

You can tell that headers are still 4-2, probably still stock 1&2 to the left and 4&3 to the right, which explains the sound more like two inline twins in alternation, rather than the typical 4-1 zoomy-scream.

Looks like Daryl chopped the stock pipe to the length you see there. I'm assuming he didn't use the stock baffles anymore, so the "custom" baffles are basically that perforated sheet covering the mouth, held on by what looks like the end of the stock pipe, chopped to about an inch's width and machine screwed on two conspicuous points on the end of this pipe as a cap.