There are still standard FT02 on the market with older fans, so you may or may not get one that has the Air Penetrator fans. If you want to be sure, you can call the store you are buying from to check the box for you (if they are willing to do that). The stanard FT02 with Air Penetrator fans have newer box that clearly states it has the new fans.
I personally don't think it's necessary to change out the top 120mm fans as aren't likely to notice a difference unless you change to a much faster (noisy) spinning fan. As a reference, the included top 120mm fan has the following specs:
Rated speed: 1200rpm
Max. Airflow: 50CFM
Noise: 19dBA