Any reason you don't want to rebuild? I'm in the process of trying to do that with mine rt now. Bought honda rebuild kit for my front master cylinder, all new lines(non honda...slingshot stainless) and honda seal for the front caliper piston. Sounds like from most the reading I have done the part that might need replacing on the front caliper is the piston if that's pitted up from rust or old fluid...if so factory one can be had for about 70-80 bucks. I was lucky I guess, got a 71 and the piston is clean. Good luck!
~Yo Han