from the fifth gear pull. All I know is Matsuda's is like 75kg and the Techno R33 GTR is like 100kg. That dyno sheet says 119.7kg which is sick. One question though, that sheet says the dyno was done in 1997? Is that a type-O? If so do they still have this car? I am betting that if it is the Penrtoof car that it may be the one from the Hyper-Rev mag. Also can you get some info from them on the final gear (diff) in that car. Pentroof recently released a 3.3 final for the Z which is like $1700????? The showed that it increased the Hp on a GT2530 300Z by about 30hp. Feel free to use Matsuda's info. He has been a tremendous help to me. He told me everything he blew up and how to avoid it. His car is very remarkable.