For those who happen to be cross shopping the two
....
C&D tested the Ferrari F40 in 1991 and the performance numbers are very similar the M3/4:
4.2 to 60
8.3 to 100
1/4 mile 12.1 @122
1.01g on the pad
The F40 is 600 lbs lighter and gets abysmal gas mileage but whatever.
I remember 23 years ago reading about this hyper-car that could smoke a Testarossa and Countach. Never did I imagine us mortals could own a car that has this much power and grip such as the F8x. Oh, and the price of that '91 F40....just under $400k.