The '06 CTS-V is powered by a 6.0 liter LS2 V8 that produces an even 400 horsepower and 395 ft-lbs of torque, mated to a Tremec T56 6-speed manual and a limited slip out back. Earlier cars suffered from axle and rear differential issues, but it seems the 2006+ cars are better sorted. Rounding out the CTS-V package is a set of huge Brembo 4-piston brakes, a track-ready suspension, and a few custom exterior pieces like the mesh bug-zester grill. Unfortunately the seller only includes one picture and precious little detail in this listing, but it doesn't look bad in the one pic.
See another 4-door, V8, 6-speed sedan for cheap? firstname.lastname@example.org