just bought a garrett ball bearing turbo that was used on a 03 duramax and i am trying to figure out the specs on it, wanting to run it on either a 06 commonrail cummins or a 90 VE cummins. the only thing i know is that it was bought from turbo exchange in charlotte, nc and supposedly?? has a 18cm2 exhaust housing, but who knows. it has A/R 0. 72 and in circles 05 and 35 stamped on the compressor housing. the tag has a serial number of JJM54494 and a part number of 766172-0001 and on the the turbine housing it has in circles 326 and 05 stamped and at the flange (t3) has A/R . 99 and m3. what are the specs? will it be laggy? and how loud do they whistle??