The T/A blocks have TA cast into the drivers side of the block.
They are a stronger block & they do have more value. If you find one, please let me know the partial VIN on it & I can check to see if the AAR or T/A that it came from still exists.
If you are looking at just the intake manifold, here is a view of an original from the top. Note that CHRYSLER is all spelled out with the part number between the front & middle carb bases.