Some friendly advice: if you are bound and determined to learn the top speed of your pride & joy, do it at a track day. Take video of the drive and your unblemished undershorts and post an epic brag here.
The alternative of doing it on a public roadway will land you an inside-view of a jail cell, as local DC Nationals player Jayson Werth is about to learn.
Jayson Werth in court is exactly what youd imagine Jayson Werth in court to be like - The Washington Post
Money quote: asked by the cop what he was doing driving his Porsche 105mph on I-495, Werth said, "Pressing my luck."
Enjoy your car safely.
Paul