im doin a rear disc conversion on my 93 civic ex. i have everything i need. but as im talking to people and chassis instructor, some people say i would have to use a master cylinder off a gsr or any integra or the 99 civic si. others say i could use my master cylinder because the EX model is the same as an 92-95 civic si hatch. wut do u guys think?

 

Do the conversion and drive the car. I doubt with just the rears you will notice any difference. The amount of fluid you are moving is actually a bit less then the drums, if it isn't identical. When you change the FRONT brakes this is a much bigger concern. Let the discs begin!

 

cool. thanks man.