Aight here we go, I just got this.....

-GSR Front Control Arms, Calipers, and rotors
-GSR Rear Trailing Arms/rear disc brake assembly
-GSR master cylinder
-GSR Brake Booster

Now, I dont know anyone who has done the complete upgrade on a civic ex, but I was wondering if it is necessary to change out the brake booster and master cylinder. There is a noticeable size difference in the 2 but the Civic Si appears to be the same as the Civic EX. Any tips would be great.