Nice car mate. As BA says, those cars can really be tuned.
The fastest I've ever driven was a bit over 160mph in the little woman's Camaro. Overbored and custom cammed 4 bolt main 350 and high geared rear end. Not a fast off the line car, but more top speed than is healthy. The motor still had some extra rpm left to go, but that's where fin angles ext. would need to be readjusted because we lost the vacuum underneath the car. It floated up and started to feel squirrely so we had to ease off and let the speed drop just a bit. Truly a scary feeling when that happens.