On a 3 hour drive I’ve seen it just under 200. The most it’s ever been was 205 with multiple hot laps at NED. 2010 with the PP trans cooler. Shorter drives and data log fun it’s usually 140-180 after it’s been warmed up.
Last year we used my wife's non-turbo flex, fully loaded with kids/dog/gear etc., to pull a 24ft pontoon a little over 300 miles. I watched trans temp like a hawk the whole time and IIRC it ran 205°-210° with the cruise set at 65 mph. I would let off going up the steeper hills to keep it below 215° because the temp would climb rapidly. It ran pretty much identical 205°-210° on the way home without the boat or trailer.
I don't think I've ever seen my SHO's transmission get past the 180's