Although I personally wouldn't take a 35+ year old car past 100mph (unless it had all new suspension, brakes, etc...
The prototype "Lil Red" Shelby was lent to a writer for Road and Track for a weekend, and he took it up a hill past Riverside, CA, and was caught, and spent overnight in jail..
Anyway, he topped 140, limited only because the front began to lift up!! This pre-dates jellybean nosed cars. This was a 428CJ car with a Paxton blower, too! The cops had to open the hood to see what it had, too!
Paul.