Ive gotten my 2000' LS up to about 142Mph .. or 230Kph. Truthfully it was smooth all the way =) I wouldnt recommend keeping it at that speed for to long due to the fact I was sitting at about 6300 rpms in 5th.

Be carefull!! When I did it, I had a 3 man operation.. One ahead .. me a mile or so.. then one behind.. all on cell phones making sure there was no cops, deer, or traffic.

-Tri