I ended up having to drill holes in the core of the divider. One hole was at 6 o'clock and the other at about 1 o'clock on the core of the baffle, while the insert has holes at 12 and 6. I also had to drill some holes as this insert doesn't reach the holes. Once installed it has mitigated the higher, penetrating exhaust spectrum and made driving much more enjoyable. Still very loud, and without it sounds a little meaner than deaf.
Synthetic motor oil MOBIL SUPER 3000 X1 5W-40, 208L
61 Review
π§ FEL-PRO VS 50561 R Valve Cover Gasket Set: Superior Quality and Durability for Optimal Engine Performance
9 Review
π§ FEL-PRO OS 30690 R Oil Pan Gasket Set: Reliable Seal for Optimal Performance
9 Review
5W-40FS A3/B4
24 Review