I have a friend who recently put a K24 in his EG race car with some interesting results.
He previously had a B18C and after swapping to the K24 his lap times slowed by about 1 sec. After much head scratching and trial and error he finally figured out why.
He was originally using 15" wheels and tyres and noticed that the Honda Accord Euro (Australian spec car) that he took the engine from came from the factory with 17" wheels.
After swapping the wheels on his EG to 17" his lap times are now faster than he was doing with the B18C. So I guess it came down to the gearing just not working well with the final drive of the 15" vs the 17" wheels.
Just thought I'd mention this for anyone who was looking to put one of these into a race application.
Cheers