I am not sure what you are asking, The SDS system WILL work on Subaru vehicles. The kit includes all of the sensors/senders required as well as new ignition coils. The only real "work" required is the installation of the crank position sensor, but anyone with a hand drill and a vice can accomplish this. There kit even includes a wiring harness! The Wolf system as well as all the rest will work as well, what is it that they say won't fit? The only thing I can think of is perhaps one of the senders they are using doesn't have the correct metric thread to screw into our blocks? In either case I do not believe this is a big problem.