this is a difficult question, for a start the front axle is different on the earlier version, it has the facility to disengage the drive by a dog clutch inside the axle, so if you were to decide to change the front axle the ratio might be different compared to the rear axle, the ratio is a sticker that usually disappears, you cannot have different ration on these, you then have the electronics to deal with,
I would say no as the second box has two output sensors where the first box only has one. Unless you also change the control box, dash switch and wiring harness as well. Wiring to back of switch will be different. Also as said front diff will not be dissengaged. I personally think you would be taking an unknown gamble.
I presume your tod box has died a death, have you tries it with the tccs fuse out in the drivers kick panel, might be better to get yours repaired, at least you then know what you have got, buying a s/h tod box can be tricky, getting a good one is not easy, the correct oil in these is of critical importance,
when buying s/h parts you get a warranty, but if the product is faulty and it has to be returned it will be to remove from the vehicle at your expense so that it can be returned for a refund. as mentioned previously finding a good s/h tod box will be difficult, they are notoriously unreliable, but it is tyres that causes this unreliability, keep your tyres as kia recommend and you wont have any issues,