Here are two interpretations on the 550 setup. One is supercharged (GR86 - light blue), while the other is N/A (BRZ - dark blue). The supercharged setup has headroom in it for more power (if you need it). And you'll need to adjust the gearing as needed per circuit. Personally, I do the auto adjust. The aero parts are all "Spec A," except for the rear wing on the BRZ which is "Spec B."
Try them out. If you don't want to commit to irreversible modifications, try the supercharged route first.