Found this while doing research:
Where do you think you'll exceed 134mph ?
The fastest E36 M3 3.0 speed trap recording during one of our Silverstone GP race meetings in 2010 was 131mph. (We don't allow 6 speed boxes). Most of the E36 3.0 racers cope quite happily with 3.91
Not saying any of it is correct but do a search on theoretical top speed. Most cars can't get there due to physics so I like the quick version versus fast, Regardless it should be fun!