$450 chinese turbo and 600 plus HP(food 4 thought)

The good turbo was good for 4 tenths in the 1/4 mile without doing anything but a turbo swap.
This is something that I have been wondering about ever since Mad Dart started his build. How much are you leaving on the table by using an Ebay Turbo? Sure you will sped more on the turbo itself, but the fab work $$ will be the same.