It all depends on how well the installation is done, has proper engine management & the maximum boost is kept at the recommended level.
The original turbo kit was installed in our '03 X in '05 at 6K miles. It has over 30K miles on it now & it's been trouble free.
['07 FSXT MODding Journal] ['03 X MODding Journal]
Wait.....your '03 only had 6k on it 2 years later in '05? (0_o)
Still, I do agree with this concept/idea. How many #'s are you running right now?