StricNyne wrote:is it a 25de ? and they bolted up a exh manifold to it ? i think the de uses rb20 trans as well, and the 25de has smaller ports as well
I think Carlos might have called it.
Block stamped with RB25.Intake Gasket matches RB20.Everything else looks to be a RB25DET
Seems that you may have a RB25DE with the turbo components slapped on it.
RB25DE and RB20DET ports are the same (and the actual mounting part of the manifold). You can also tell if you have a RB25DET transmission or a RB25DE transmission as they look similar but the DET's shifter plate is slanted.
Minor differences you may start to find that scream incorrect motor. Or possibaly a cluster mess of engine parts from various RB motors.
Either way, good luck with everything and please accept those requesting pictures as they're only out to help.