I've hit 135 while running late for school one day. I know it was stupid but was too fun. Had to let off, traffic comes up really fast at that speed, but it felt really stable.

To contrast, I had a 95 Mystique LS at one point, and @ the 115 MPH limiter it was quite unsettled. I only did that once

2001 Mustang Bullitt Dark Highland Green #0048 Performance by Ford Racing, Bassani, SLP, H&R and etc. Former owner of a 99 Silver Frost SVT GetOnItRACING