Lots of ways to make it quieter yes depending on what's fitted, ....if it has De-Cats then you could change those for HFC's (High Flow Cats) which would be marginally quieter or you could go back to the OEM Cats which would be quieter again.
Some exhausts allow for the fitting of bungs. The Japspeed K1 if that's what it was on the 350, would for example.
The other option is as allaboutthepasty mentioned. Put it up on here for sale and buy something new & more to your tastes.
Welcome aboard btw.