The 65's with their 604 HP and 738 tq can dip into the 11's bone stock, 11.9 with an extremely rare 11.8.
mph can be around 122-124.
For a 65 to compete with a Z06 they would need a Renntech ECU and tranny upgrade. At that point they will be as quick as 11.4 and trap just under 130. Renntech also offers a carbon fiber air box which helps.
All these cars are all held back by the tires they run. Sticky tires makes a HUGE difference.
All the mercedes are auto's (5 speeds) and can't launch from a high rpm like a manual car (z06).....If you try and stall the converter in the mb it yanks timing and fuel