I bought the trailing arms off a 2000 acura integra. Bought the brake lines for a 91 crx si. the e-brake cable for 91 crx si. but then friends tell me I should upgrade my master cylinder, brake booster, and proportioning valve. Do i really need the last things. My master cylinder size is 13/16 and the upgrade from an integrea is 15/16. Is there really a difference.

 

You don't HAVE to, it's all about pedal feel. I'd really like to upgrade mine, since I've had these gsr brakes on a while without upgrading the rest.