i have an 89 dx civic and and 89 crx si. i am taking the rear brakes off the crx and putting them on the civic. they are about 9.25". i was wondering about the front brakes are the two cars rotors the same. is there front big brake swaps? i heard that 91 ex's are like 10"+. also are the brmbo cross drilled and slotted rotors any good or better than other aftermarket rotors?