Well, you don't need a lot of trigger-teeth with modern hardware. It can calculate time between triggers very easily without overloading CPU like on older systems. Some of the older Motronics had 132-tooth triggers!!!
Looks like the Nissan SR20VE matches closest to the 250 trigger pattern.
Might just want to try that to start. And using wasted-spark will take care of the 180-degree firing-order and avoid needing a cam-sensor.