Morning all,
  I noticed some minor hesitation as I tried to bring the speed up on the
local 4 lane en route to diving the kids to school this morning.  87 GL
automatic, bone stock, new fuel pump, has been running good for a few months
straight, almost full tank of fresh gas, no other issues.  It starts fine,
accelerates from full stop normally, slight delay getting up to speed from
30-50 mph, and then, at 52-53 mph, it just won't go any faster.  If I push
the pedal down to the floor (not all the way to the tranny kickdown
activation, if speed allowed it) the engine, actually bogs down slightly.
 If back pedal, the responsiveness returns but still, no speed faster than
about 53 mph.  I ruled out bad gas as it's not hesitating and no issues at
any other speed.  Bad gas tends to reflect more in sputtering across the
board as opposed to a hard cut off and definitely not such a fixed point on
the speedo like I'm getting.

Any ideas?  Have to drop the misses off at the airport today (2 hours round
trip) so I'm scratching my head a lot right now.

Thanks,

TJ
87 GL 2.1 Auto