i have bought the wilwood 310 4 pot brake it for my civic , i have some Q

1. will these brakes be ok on 15" wheels even if ive got to use spaces

2. im wanting to buy a wilwood master cylinder but there are too many listed so i dont know witch one to buy.

3. im wanting to run 262's on the rear with a wilwood brake bias kit how hard are these to fit and what honda comes with 262's on the rear or would i be better buying a wilwood rear kit

Thanks