TCI 727 Torqueflite race trans (pn. 890-112000)

I just purchased this TCI trans (pn. 890-112000)
Rev Man valve body, 4.2 lever, steel planetaries
5 disk sets etc
anyone out there unhappy with this unit?
anything I should be aware of?
I want to put in a 5000 s/s convertor
for a couple hundred miles a year street
and occasional drags. Motor is 550 HP 440
in a 3100# 72 Duster with 456 gears