If you google "TTE420 1/4 mile times" you will see a few examples
I think they were all DSG cars though, and 4WD. You already have the latter which is a good start, but it's so easy to bog a 4WD off the line with a manual! Difficult to find the sweet spot but yeah, it's all in the practice!
At least with the TTE420 it's a pure bolt-on. Just need a tune and you're all set