about 2 weeks ago i took it up to 150.... i have done 165 in my eagle talon, and it felt 'okay'..and it had some heavy suspension work.
i did just about 140(i stopped at like 139 lol) in my s2000, and that felt 'okay' as well i guess, about the same as the talon, but the s2k was stock.
now, i hit 150 in the z......jesus! it felt like i was legitimately going 80 mph, i even talked about it to my car buds as to how unbelievably stable it felt..it felt unreal, but i enjoyed it.
also, yes i know, take it to a track blah blah blah, but i live in north carolina, and i live not that far away from a very very large, and not really vacant road, so yeah, i wasn't endangering anyones life but my own when i did it
