My exhaust is the full Kooks system. It is the best TD system with Long Tubes you can buy, but it is costly. No bending, or modifying parts, but you will need to remove the "wavy" plate by the trans and the upper panhard bar needs to be a UMI or BMR to clear both 3" pipes.
I've owned and worked on this car for 16 years - here's the mod list:
Engine:
Patriot Stage 2 Heads (only purchased and installed as I got them very cheap)
BTR Custom grind cam, upgraded larger injectors.
1.85 Jesel shaft roller rockers
Meziere Electric Water Pump
Katech belt tensioner
ASP underdrive pully
Billet timing set, Hinson C7R Timing chain
LS6 Intake, ported TB, SLP lid, bellow, and MAF
Kooks 1 3/4" - 1 7/8" stepped long tube headers, no cats, full Kooks 3" true dual exhaust.
NGK TR6 plugs, MSD wires and coil packs.
Stock bottom end.
Trans:
Spec Stage 3 Clutch and billet steel flywheel.
McLoed master cylinder
Carbon Fiber driveshaft
TA girdle for stock rear (will upgrade to 12 bolt when it goes)
Suspension:
UMI adjustable Torque arm, Lower control arms, upper and lower panhard bars, 3 point sub-frame connectors, trans tunnel relocation bracket, lower control arm relocation brackets (welded and bolted in).
Eibach springs, Bilstein shocks (SLP kit, will upgrade to a full Strano setup in the near future).
Brakes:
Wilwood 6 piston SL-Aluminum fronts, 4 piston rears - Wilwood drilled and slotted rotors.
Tuning:
Custom HP Tuners
A bunch of other cosmetic/interior upgrades (custom gauges, line lock switch in ashtray, whistler headlights, ZL1 grill, etc). C6Z06 18" wheels for the street.
Finishing my BTR custom grind install currently - here is a previous video of an off-the-shelf Lunati grind - skip to 1:50