I pretty much will align with the comments from Thumper and DualMag.
The LH TX is not really a true, mirror-image LH. Yes, the port is altered
to left, but the ABT release remains on the right side of the action. It's
more awkward to use. The 77-97 has the ambi access to the breech, and
of course, no ABT release. The plus to the TX would likely be the 'tuned'
feeling OOtB, and the trigger reach set-back to the rear. I sent my 77 to
MotorHead for tuning, and include a Rowan full-setback trigger for him to
install. Schweeeeeeet.