STOCK CENTRE + Y

Anyone know of any members installed after maket dump and quad tip muffs and retain stock centre and y to a 07-08 lib 2.5t?
Currently have a phat dump and thinking of installing TCP muffs without replacing the centre and y to keep noise down. How restrictive is the stock muff?
Curious on noise level and outcome b4 i commit.
Currently have a phat dump and thinking of installing TCP muffs without replacing the centre and y to keep noise down. How restrictive is the stock muff?
Curious on noise level and outcome b4 i commit.