Whatever the speedo says is largely irrelevant, those cars are limited to 155.
A 335 I owned briefly would accelerate staggeringly quickly…and then stop…at the limiter funnily enough.
Tell him to download one of those GPS/datalogger type apps that uses your phones accelerometer and GPS functions to get some legit stats on his car for accurate non salesman/BS readings.
The dash on a car like that is as much to amuse the 10 year old boy in all of us as anything else, think about the ‘this goes up to 11’ scene in Spinal Tap to understand what I’m getting at!
I also had a Yamaha R6 with a rev counter that showed the redline at 18,000 rpm….magazines tests showed the engine actually ‘only’ revved out to 16,000 rpm but it didn’t stop people buying them and playing pub Top Trumps with BS stats like that!