For all the turbo experts. I just got this turbo and was wondering if there is any way to identify the center section. I assume that this turbo is probably a hybrid, but was wondering if the center section is a true garret/air research. The reason I might be led to think it is an older air research is because of the "A" casting. But i am no turbo expert. What do you guys think??

Here are specs and pictures.
Compressor specs:
4" inlet 2.5" outlet
.60 a/r
~58 trim wheel

Turbine specs:
.96 a/r
75 trim wheel

 

did you buy that off ebay?

 

no i did not. got it from a local seller.