Jason, all T rods are the same dimenstions, do a search.
2T crank and 2T pistons must be used together.
3T crank and 3T pistons must be used together.
This is because the additional throw of the 3T crank is accommodated by a shorter gudgeon pin-to-crown height in the 3T piston.
I guess you could use 3T pistons on 2T crank but you'd have very low static compression.
2T pistons on 3T crank will extend beyond deck height, this is why re-flycut 3T-C pistons are commonly used instead of just factory 2T-G pistons (which are too tall).