A Chrysler built TorqueFlite 727. However, it must be a unit that was built for IHC as they have a case that mates to the IH SV-8 engines (304-345-392).
A 727 from a Mopar product or an AMC car/truck will not mate up.
You need one from a IH pickup or Travelall or Travelette from '71 thru '75, 4X4 or 4X2 would be the same.
Or one from a Scout II 4X2 only from '73 thru '80. (Must be from a 4x2 Scout II)
You will need the Shift linkage and the linkage for the Throttle Valve, aka "kick-down" linkage.
Also cooling lines for the trans fluid cooler, or fab your own lines.
An aftermarket trans cooler mounted in front of the radiator is recommended for the 727.
Another option is to buy the transmission adaptor from IHPA and install a GM 700R4 automatic w/overdrive.