Just have the shop weld in some flowmaster or mac mufflers. Leave the cats alone!
If you hollow out those cats your gonna get a nasty high pitched raspy sound... yuck! And depending on where you live, you wont pass smog with MIL eliminators... by the way, using those messes up your air to fuel ratio!
Just cut out the stock mufflers, weld in the new ones and your all set 
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Torch Red '02 GT Convertible 5 spd
BBK long tubes, BBK h-pipe, MAC mufflers, K&N w/ silencer trimmed, FRPP 70mm throttle body, C&L plenum, Mobil1 synthetic fluids, FRPP aluminum drive shaft, Steeda Tri-Ax shifter, FRPP 4.10's, 18x9 & 18x10 Saleens with Dunlop SP Super Sport Race rubber, Mach1 grill (GT delete), & Mach1 bumper chin!
Click here for pictures & more info!
If you are in Northern California, check out North Bay Mustang Club for local meets and cruises!
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