83 N/A. Rock solid past 120 MPH, gets pretty squirrely above 100 with the windows down, somewhat more stable with T-tops off and windows down.
All on straight, more-or-less level surface; speeds estimated from digital tach reading (accurate, but imprecise). Pulls pretty well even in 5th once it gets above about 3k. Runs out of go rather abruptly somewhere around 5k in 5th, which should be about 135, which I think is a fueling issue. Even at this point, it still feels steady enough to steer one-handed. (Before anyone jumps, I don't, but it feels that stable.)
Only "performance mods" are a Z31t coil, and a PO swapped a 3.7 R200. Everything else, including the aero parts and drivetrain, is beat to hell stocker "junk".