+1 on being careful with brake replacement, I had a 1986 Schwinn Passage tourer that I rebuilt last year and intended to upgrade the brakes with Tektro 720s, well the back brake replacement went fine but I discovered, as others have mention that the front forks had a narrower spacing in the mid 80s of the canit studs and the 720s on the front were a no go so I ended up with the stock dia-compes on the front and the 720s in the rear. New Kool-stop pads all around will do wonders for the braking.

I had a Miyata 912 I wish I had never sold, great score and have fun with it. I recommend replacing the basics, tires, chain brake pads etc and riding it and dialing it in before making wholesale changes.