Air handler hung

After replacing our upstairs A/C in the house, I hung it up in the shop as the blower and heater sections are still good.  I've needed it out of the floor so I can get a car or go kart in there to work on converting next.  I've been flip flopping between the 78TA or my kids off road cart to do next.

Y'all let me know which you think I should do next.

Thanks,
Coop