The nice thing about centerpulls when it comes to reach is that they usually have different reach for front and rear, accounting for the fact that the reach requirement is usually not the same for front and rear. My "Schwinn Approved" Dia Compe centerpulls on my Schwinn (originally 27," now converted to 700c) easily have enough reach for the front brake, and the rear brake, with it's longer reach, has plenty of reach to spare, too. Here are some Weinmanns on ebay, with one having more reach than the other:

http://cgi.ebay.com/Vintage-Weinmann...QQcmdZViewItem

The BIN price on these seems kind of high, though; I think I bought my rear brake NOS for $7 on ebay. But if you need'em, you need'em-