Have had my trac up to 90 m.p.h. and it was all manner of "squirrely-squeamish"!
If you want a 'Vette or Mustang, by all means, get one. I just don't think our tracs were
meant to go that fast on a regular basis, and I KNOW they weren't meant to handle that
well at that speed. I'm very happy with my trac, for what it was designed for.
Mine usually shifts, at full throttle around 5,600 r.p.m., and I'm not comfortable pushing it
that high, and I've only done it a few times just to see what the automatic transmissions
factory shift points were, and that seems to be my trac's shift points.