The story on the Barton cr's is that he did a ton of R&D on them only to arrive at an event in California and find all the west coast guys running fabricated tunnel rams with slightly offset carbs and calling them cr's. The NHRA tech guys sided with the fabbed units and that pretty much put an end to the original style cr's. I would suspect the Barton cr is a fully race prepped item. I'm guessing the Indy TR is "out of the box". The Barton cr should easily outperform an out of the box Indy tr.