Ordering a crankshaft??

[BlewByYou]

I have a 97 240sx.
Im ordering a stock crank but there asking the following

Crank 40F With 3 keyways and flywheel centering ring
Crank 30R; With 2 keyways and flywheel centering ring
Crank 86G; With 2 keyways; No flywheel centering ring
Crank 86G; With 3 keyways; No flywheel centering ring

What crank is in a 97 ka24de???