Flowmaster Super 40 Series Chambered Muffler Super 40 2.50 Dual In 2.50 Dual Out Aggressive Sound Flowmaster 9525454 2012-gmc-savana-2500-esi5339666 "name":"What drill bit size is

"name":"What drill bit size is recommended for installation

They're built from heavy duty mild steel

"name":"How does the ALL12203 mount

all parts must be factory stock

1st Gen DSM\" mean

Flowmaster Super 40 Series Chambered Muffler Super 40 2.50 Dual In 2.50 Dual Out Aggressive Sound Flowmaster 9525454 2012-gmc-savana-2500-esi5339666 "name":"What drill bit size isThe Super 40 features Flowmaster's Delta Flow technology. It's larger case profile provides the best of both worlds of performance and sound. The Super 40 has that deep powerful sound of the Original 40 series but with all the benefits of performance and low interior resonance from the Delta Flow&reg technology. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability. Deep Aggressive Sound Exhaust Note Noticeable interior