I wasn't able to remove the housings so Im not exactly sure what the specs are but my guess is t04b housing machined with t04e compressor xx trim, .63 a/r stage 3 wheel hot side. Numbers stamped is .50 a/r cold, and .63 hot side. Maybe you guys could take a guess and we'll see whos closest after I do finally get the housings off

 

I've never seen a turbo in my life
but I'll give it a shot..

TO4B 60-1
not sure about the turbine, but it does look like .63 a/r..

 

You see those numbers on the exhaust housing where it bolts to your manifold? Read those, post them up and specify which is on the exhaust and compressor side.

 

20357 exh side. 20358 comp side,

20358 is turbonetics p/n for a .63 a/r, not sure which stage. it's also stamped .63 on the interior of the housing

 

its either a 60-1 machined into a to4b housing or maybe a 57-54 trim would be my guess. I would need at least a ruler or something for the compressor wheel