im looking into a msd ignition, but dont know which one to get...... i would like that rev limit adjustability, but thats about the only thing i really need...... anyone know which model i need?

What model subaru do you have?

 

All the "newer" subarus either have a distributeless or coil on plug ignition system.

 

For the distributeless ignitions you can use the MSD Dis 2 ignition system. For the coil on plug ignitions, you really can't do anything.

 

The rev limiter option is there, however you can't increase the rev limit because the ECU has its own rev limiter. You'd have to bypass it first.