I dont know if this is the right forum so please move if necessary.

I have a turbo off of a CAT 3406 off-highway engine (Locomotive generator) and need help in identifying it.

PN: 1305469
S4DS034
OR-7075

I searched but didn't come up with much detailed info, this was the best I could find:
1995-10 Caterpillar Truck (Off-Highway) Industrial S4DS034 Turbo 168665

Is this an S400 based turbo?

Would this make a good bottom turbo on a mild twins for a 12v 5.9 cummins?

 

Man I couldnt find anything either. Get a caliper and measure the thing, probably your best bet.