it a t4 i with 1.00 ar and .70 on the compresser and has a garrett tag with the numbers 408105-9278 need to know what this came off of or what wil it do on a built b series motor ??

 

.. that's a big turbo... It looks new. It might not have come off of anything

 

It won't spool till late.

 

if you change the exhaust housing (can be had for around 150) that turbo will be great for around 500whp depending on the size of exhaust housing, if you go with a 2.0l bottom end, i'd go with an .80~ exhaust housing, with a 1.8l exhaust housing i'd go with around a .63