Yo!
Buy my stuff
I have a 93 model RB25DET block/girdle and good crank sitting here doing nothing but taking up room.
86.5mm bore but will need to be taken out to 87.
The crank is good and has standard journal sizes.
Oil squirters are intact, also have 1 or 2 oil pumps floating around I'll throw in
Come and get the lot for $100