If you wanna get endorsed then must put rear disc disk brake also...
Can, But y u wanna put 4pot? fancy abt the look? Seriously evo3 brake is more than enough for road use... fyi im using ori mivec caliper with better disc and pad only... it's enough for me...
If you really want to hv 4 pot then pls get complete/used aftermarket set which 100% suits your car... Used item from other vehicle that has to be modified to fit it in then better forget it, yeah yeah i know many people say nothing will happen, dun worry lah & etc BUT!!! if really something happened are they going to compensate you?
I modded my hub to suit my rim when i first started to mod car, now i'm very regret doing so... and i had had enough of all those nonsense... Ppl are not responsible to your life so ppl tend to simply speak, or worst, sweet talk to get your money...