i doubt that they would be of any good use if your practicing before a race. They would be too light and too soft. Average voltage from a 2400 was well below even a sport pack 4200 of today..
To just play around and get to know a track or just for fun sure. But if trying to determine gearing or chassis setup. They are not much use..
I notice running a old 3800 during practice of a race night is to soft to compare how my car will run in the heats. I typically find that my car is much much faster once my race packs are in the car
"Without Rules its just Backyard Bashing!"