If you're serious about this project, do some more research. Alot of people choose the B18B over the B18C for turbo. Lower compression off the bat, oil squirters, etc.
The Si has all the power options that the EX has. The springs are slightly stiffer than the EX model. The Si has 4 wheel disc brakes also. There's more differences, but that's the basics(aside from the motor).
Are you ok?
