I don't necessarily think that is the case. That was JB4 only.
The video you posted probably is the JB4 record however Mr. WAT401K has reached a record of 10.39 using the E40 blend and K tuner Stage II. Therefore, it's highly plausible to shave off another 0.5 seconds and getting into the 9's with the Pure turbos. The mention of upgrading the clutch/transmission was to safeguard against potential failures due to the increased power output over time.